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Finding the Fourth Proportional to 688,695.75, 950,223.63 and 402,051.12

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Solution

The fourth proportional to 688,695.75, 950,223.63 and 402,051.12 is: 554,727.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    688,695.75 : 950,223.63 = 402,051.12 : x
  2. Step 2: Convert to fraction form
    688,695.75/950,223.63 = 402,051.12/x
  3. Step 3: Cross multiply
    688,695.75x = 950,223.63 × 402,051.12
  4. Step 4: Simplify right side
    688,695.75x = 382,038,474,691.97
  5. Step 5: Solve for x
    x = 382,038,474,691.97/688,695.75
  6. Step 6: Final answer
    x = 554,727.50

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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.