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Finding the Fourth Proportional to 637,009.80, 955,514.70 and 437,944.20

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Solution

The fourth proportional to 637,009.80, 955,514.70 and 437,944.20 is: 656,916.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    637,009.80 : 955,514.70 = 437,944.20 : x
  2. Step 2: Convert to fraction form
    637,009.80/955,514.70 = 437,944.20/x
  3. Step 3: Cross multiply
    637,009.80x = 955,514.70 × 437,944.20
  4. Step 4: Simplify right side
    637,009.80x = 418,462,120,879.74
  5. Step 5: Solve for x
    x = 418,462,120,879.74/637,009.80
  6. Step 6: Final answer
    x = 656,916.30

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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.