Home / 689,663.49-951,593.02-403,128.15

Finding the Fourth Proportional to 689,663.49, 951,593.02 and 403,128.15

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Solution

The fourth proportional to 689,663.49, 951,593.02 and 403,128.15 is: 556,233.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,663.49 : 951,593.02 = 403,128.15 : x
  2. Step 2: Convert to fraction form
    689,663.49/951,593.02 = 403,128.15/x
  3. Step 3: Cross multiply
    689,663.49x = 951,593.02 × 403,128.15
  4. Step 4: Simplify right side
    689,663.49x = 383,613,931,689.87
  5. Step 5: Solve for x
    x = 383,613,931,689.87/689,663.49
  6. Step 6: Final answer
    x = 556,233.49

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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.