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Finding the Fourth Proportional to 679,617.95, 936,490.82 and 525,721.59

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Solution

The fourth proportional to 679,617.95, 936,490.82 and 525,721.59 is: 724,426.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,617.95 : 936,490.82 = 525,721.59 : x
  2. Step 2: Convert to fraction form
    679,617.95/936,490.82 = 525,721.59/x
  3. Step 3: Cross multiply
    679,617.95x = 936,490.82 × 525,721.59
  4. Step 4: Simplify right side
    679,617.95x = 492,333,440,282.20
  5. Step 5: Solve for x
    x = 492,333,440,282.20/679,617.95
  6. Step 6: Final answer
    x = 724,426.78

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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.