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Finding the Fourth Proportional to 497,328.80, 745,118.40 and 408,099.20

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Solution

The fourth proportional to 497,328.80, 745,118.40 and 408,099.20 is: 611,430.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    497,328.80 : 745,118.40 = 408,099.20 : x
  2. Step 2: Convert to fraction form
    497,328.80/745,118.40 = 408,099.20/x
  3. Step 3: Cross multiply
    497,328.80x = 745,118.40 × 408,099.20
  4. Step 4: Simplify right side
    497,328.80x = 304,082,222,945.28
  5. Step 5: Solve for x
    x = 304,082,222,945.28/497,328.80
  6. Step 6: Final answer
    x = 611,430.95

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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.