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Finding the Fourth Proportional to 385,001.80, 577,502.70 and 345,635.80

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Solution

The fourth proportional to 385,001.80, 577,502.70 and 345,635.80 is: 518,453.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,001.80 : 577,502.70 = 345,635.80 : x
  2. Step 2: Convert to fraction form
    385,001.80/577,502.70 = 345,635.80/x
  3. Step 3: Cross multiply
    385,001.80x = 577,502.70 × 345,635.80
  4. Step 4: Simplify right side
    385,001.80x = 199,605,607,716.66
  5. Step 5: Solve for x
    x = 199,605,607,716.66/385,001.80
  6. Step 6: Final answer
    x = 518,453.70

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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.