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Finding the Fourth Proportional to 502,430.42, 693,179.46 and 321,248.40

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Solution

The fourth proportional to 502,430.42, 693,179.46 and 321,248.40 is: 443,211.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    502,430.42 : 693,179.46 = 321,248.40 : x
  2. Step 2: Convert to fraction form
    502,430.42/693,179.46 = 321,248.40/x
  3. Step 3: Cross multiply
    502,430.42x = 693,179.46 × 321,248.40
  4. Step 4: Simplify right side
    502,430.42x = 222,682,792,437.86
  5. Step 5: Solve for x
    x = 222,682,792,437.86/502,430.42
  6. Step 6: Final answer
    x = 443,211.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.