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Finding the Fourth Proportional to 438,601.91, 658,165.28 and 402,910.07

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Solution

The fourth proportional to 438,601.91, 658,165.28 and 402,910.07 is: 604,606.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,601.91 : 658,165.28 = 402,910.07 : x
  2. Step 2: Convert to fraction form
    438,601.91/658,165.28 = 402,910.07/x
  3. Step 3: Cross multiply
    438,601.91x = 658,165.28 × 402,910.07
  4. Step 4: Simplify right side
    438,601.91x = 265,181,413,730.99
  5. Step 5: Solve for x
    x = 265,181,413,730.99/438,601.91
  6. Step 6: Final answer
    x = 604,606.16

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.