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Finding the Fourth Proportional to 641,713.80, 962,570.70 and 607,499.40

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Solution

The fourth proportional to 641,713.80, 962,570.70 and 607,499.40 is: 911,249.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,713.80 : 962,570.70 = 607,499.40 : x
  2. Step 2: Convert to fraction form
    641,713.80/962,570.70 = 607,499.40/x
  3. Step 3: Cross multiply
    641,713.80x = 962,570.70 × 607,499.40
  4. Step 4: Simplify right side
    641,713.80x = 584,761,122,707.58
  5. Step 5: Solve for x
    x = 584,761,122,707.58/641,713.80
  6. Step 6: Final answer
    x = 911,249.10

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Double scale
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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.