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Finding the Fourth Proportional to 704,356.16, 972,002.08 and 402,542.40

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Solution

The fourth proportional to 704,356.16, 972,002.08 and 402,542.40 is: 555,503.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    704,356.16 : 972,002.08 = 402,542.40 : x
  2. Step 2: Convert to fraction form
    704,356.16/972,002.08 = 402,542.40/x
  3. Step 3: Cross multiply
    704,356.16x = 972,002.08 × 402,542.40
  4. Step 4: Simplify right side
    704,356.16x = 391,272,050,088.19
  5. Step 5: Solve for x
    x = 391,272,050,088.19/704,356.16
  6. Step 6: Final answer
    x = 555,503.13

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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.