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Finding the Fourth Proportional to 577,389.71, 865,788.82 and 307,671.53

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Solution

The fourth proportional to 577,389.71, 865,788.82 and 307,671.53 is: 461,349.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    577,389.71 : 865,788.82 = 307,671.53 : x
  2. Step 2: Convert to fraction form
    577,389.71/865,788.82 = 307,671.53/x
  3. Step 3: Cross multiply
    577,389.71x = 865,788.82 × 307,671.53
  4. Step 4: Simplify right side
    577,389.71x = 266,378,565,808.17
  5. Step 5: Solve for x
    x = 266,378,565,808.17/577,389.71
  6. Step 6: Final answer
    x = 461,349.69

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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.