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Finding the Fourth Proportional to 723,770.40, 1,085,655.60 and 607,648.80

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Solution

The fourth proportional to 723,770.40, 1,085,655.60 and 607,648.80 is: 911,473.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    723,770.40 : 1,085,655.60 = 607,648.80 : x
  2. Step 2: Convert to fraction form
    723,770.40/1,085,655.60 = 607,648.80/x
  3. Step 3: Cross multiply
    723,770.40x = 1,085,655.60 × 607,648.80
  4. Step 4: Simplify right side
    723,770.40x = 659,697,322,553.28
  5. Step 5: Solve for x
    x = 659,697,322,553.28/723,770.40
  6. Step 6: Final answer
    x = 911,473.20

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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.