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Finding the Fourth Proportional to 389,841.60, 584,762.40 and 283,553.40

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Solution

The fourth proportional to 389,841.60, 584,762.40 and 283,553.40 is: 425,330.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,841.60 : 584,762.40 = 283,553.40 : x
  2. Step 2: Convert to fraction form
    389,841.60/584,762.40 = 283,553.40/x
  3. Step 3: Cross multiply
    389,841.60x = 584,762.40 × 283,553.40
  4. Step 4: Simplify right side
    389,841.60x = 165,811,366,712.16
  5. Step 5: Solve for x
    x = 165,811,366,712.16/389,841.60
  6. Step 6: Final answer
    x = 425,330.10

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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.