Home / 1,216,346,810.97-1,678,623,773.79-680,466,508.32

Finding the Fourth Proportional to 1,216,346,810.97, 1,678,623,773.79 and 680,466,508.32

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Solution

The fourth proportional to 1,216,346,810.97, 1,678,623,773.79 and 680,466,508.32 is: 939,080,242.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,216,346,810.97 : 1,678,623,773.79 = 680,466,508.32 : x
  2. Step 2: Convert to fraction form
    1,216,346,810.97/1,678,623,773.79 = 680,466,508.32/x
  3. Step 3: Cross multiply
    1,216,346,810.97x = 1,678,623,773.79 × 680,466,508.32
  4. Step 4: Simplify right side
    1,216,346,810.97x = 1,142,247,258,133,822,848
  5. Step 5: Solve for x
    x = 1,142,247,258,133,822,848/1,216,346,810.97
  6. Step 6: Final answer
    x = 939,080,242.44

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Half scale
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Double scale
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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.