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Finding the Fourth Proportional to 867,990.39, 1,300,744.88 and 488,113.73

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Solution

The fourth proportional to 867,990.39, 1,300,744.88 and 488,113.73 is: 731,472.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    867,990.39 : 1,300,744.88 = 488,113.73 : x
  2. Step 2: Convert to fraction form
    867,990.39/1,300,744.88 = 488,113.73/x
  3. Step 3: Cross multiply
    867,990.39x = 1,300,744.88 × 488,113.73
  4. Step 4: Simplify right side
    867,990.39x = 634,911,435,155.20
  5. Step 5: Solve for x
    x = 634,911,435,155.20/867,990.39
  6. Step 6: Final answer
    x = 731,472.89

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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.