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Finding the Fourth Proportional to 557,781.74, 769,743.63 and 303,132.98

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Solution

The fourth proportional to 557,781.74, 769,743.63 and 303,132.98 is: 418,326.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,781.74 : 769,743.63 = 303,132.98 : x
  2. Step 2: Convert to fraction form
    557,781.74/769,743.63 = 303,132.98/x
  3. Step 3: Cross multiply
    557,781.74x = 769,743.63 × 303,132.98
  4. Step 4: Simplify right side
    557,781.74x = 233,334,680,397.92
  5. Step 5: Solve for x
    x = 233,334,680,397.92/557,781.74
  6. Step 6: Final answer
    x = 418,326.14

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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.