Home / 916,712.71-1,265,039.37-508,813.52

Finding the Fourth Proportional to 916,712.71, 1,265,039.37 and 508,813.52

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Solution

The fourth proportional to 916,712.71, 1,265,039.37 and 508,813.52 is: 702,149.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    916,712.71 : 1,265,039.37 = 508,813.52 : x
  2. Step 2: Convert to fraction form
    916,712.71/1,265,039.37 = 508,813.52/x
  3. Step 3: Cross multiply
    916,712.71x = 1,265,039.37 × 508,813.52
  4. Step 4: Simplify right side
    916,712.71x = 643,669,128,463.09
  5. Step 5: Solve for x
    x = 643,669,128,463.09/916,712.71
  6. Step 6: Final answer
    x = 702,149.24

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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.