Home / 1,009,212,746.91-1,392,713,868.27-557,090,989.22

Finding the Fourth Proportional to 1,009,212,746.91, 1,392,713,868.27 and 557,090,989.22

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Solution

The fourth proportional to 1,009,212,746.91, 1,392,713,868.27 and 557,090,989.22 is: 768,785,718.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,009,212,746.91 : 1,392,713,868.27 = 557,090,989.22 : x
  2. Step 2: Convert to fraction form
    1,009,212,746.91/1,392,713,868.27 = 557,090,989.22/x
  3. Step 3: Cross multiply
    1,009,212,746.91x = 1,392,713,868.27 × 557,090,989.22
  4. Step 4: Simplify right side
    1,009,212,746.91x = 775,868,346,574,947,072
  5. Step 5: Solve for x
    x = 775,868,346,574,947,072/1,009,212,746.91
  6. Step 6: Final answer
    x = 768,785,718.32

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Half scale
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Double scale
Find fourth proportional to 1,009,212,747.91, 1,392,713,869.65 and 557,090,990.22
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.