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Finding the Fourth Proportional to 657,221.60, 985,832.40 and 432,835.40

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Solution

The fourth proportional to 657,221.60, 985,832.40 and 432,835.40 is: 649,253.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,221.60 : 985,832.40 = 432,835.40 : x
  2. Step 2: Convert to fraction form
    657,221.60/985,832.40 = 432,835.40/x
  3. Step 3: Cross multiply
    657,221.60x = 985,832.40 × 432,835.40
  4. Step 4: Simplify right side
    657,221.60x = 426,703,161,186.96
  5. Step 5: Solve for x
    x = 426,703,161,186.96/657,221.60
  6. Step 6: Final answer
    x = 649,253.10

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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.