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Finding the Fourth Proportional to 662,006.36, 913,672.85 and 403,939.76

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Solution

The fourth proportional to 662,006.36, 913,672.85 and 403,939.76 is: 557,500.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    662,006.36 : 913,672.85 = 403,939.76 : x
  2. Step 2: Convert to fraction form
    662,006.36/913,672.85 = 403,939.76/x
  3. Step 3: Cross multiply
    662,006.36x = 913,672.85 × 403,939.76
  4. Step 4: Simplify right side
    662,006.36x = 369,068,785,159.45
  5. Step 5: Solve for x
    x = 369,068,785,159.45/662,006.36
  6. Step 6: Final answer
    x = 557,500.36

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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.