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Finding the Fourth Proportional to 657,631.60, 986,447.40 and 433,245.40

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Solution

The fourth proportional to 657,631.60, 986,447.40 and 433,245.40 is: 649,868.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,631.60 : 986,447.40 = 433,245.40 : x
  2. Step 2: Convert to fraction form
    657,631.60/986,447.40 = 433,245.40/x
  3. Step 3: Cross multiply
    657,631.60x = 986,447.40 × 433,245.40
  4. Step 4: Simplify right side
    657,631.60x = 427,373,798,391.96
  5. Step 5: Solve for x
    x = 427,373,798,391.96/657,631.60
  6. Step 6: Final answer
    x = 649,868.10

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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.