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Finding the Fourth Proportional to 489,239.60, 733,859.40 and 442,000.40

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Solution

The fourth proportional to 489,239.60, 733,859.40 and 442,000.40 is: 663,000.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,239.60 : 733,859.40 = 442,000.40 : x
  2. Step 2: Convert to fraction form
    489,239.60/733,859.40 = 442,000.40/x
  3. Step 3: Cross multiply
    489,239.60x = 733,859.40 × 442,000.40
  4. Step 4: Simplify right side
    489,239.60x = 324,366,148,343.76
  5. Step 5: Solve for x
    x = 324,366,148,343.76/489,239.60
  6. Step 6: Final answer
    x = 663,000.60

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Similar ratio
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1.5x scale

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.