Home / 1,072,742.32-1,480,512.90-643,008.16

Finding the Fourth Proportional to 1,072,742.32, 1,480,512.90 and 643,008.16

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Solution

The fourth proportional to 1,072,742.32, 1,480,512.90 and 643,008.16 is: 887,428.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,072,742.32 : 1,480,512.90 = 643,008.16 : x
  2. Step 2: Convert to fraction form
    1,072,742.32/1,480,512.90 = 643,008.16/x
  3. Step 3: Cross multiply
    1,072,742.32x = 1,480,512.90 × 643,008.16
  4. Step 4: Simplify right side
    1,072,742.32x = 951,981,875,685.26
  5. Step 5: Solve for x
    x = 951,981,875,685.26/1,072,742.32
  6. Step 6: Final answer
    x = 887,428.28

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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.