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Finding the Fourth Proportional to 625,328.48, 938,010.24 and 389,352.80

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Solution

The fourth proportional to 625,328.48, 938,010.24 and 389,352.80 is: 584,040.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,328.48 : 938,010.24 = 389,352.80 : x
  2. Step 2: Convert to fraction form
    625,328.48/938,010.24 = 389,352.80/x
  3. Step 3: Cross multiply
    625,328.48x = 938,010.24 × 389,352.80
  4. Step 4: Simplify right side
    625,328.48x = 365,216,913,372.67
  5. Step 5: Solve for x
    x = 365,216,913,372.67/625,328.48
  6. Step 6: Final answer
    x = 584,040.11

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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.