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Finding the Fourth Proportional to 478,655.38, 660,534.42 and 263,789.92

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Solution

The fourth proportional to 478,655.38, 660,534.42 and 263,789.92 is: 364,024.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,655.38 : 660,534.42 = 263,789.92 : x
  2. Step 2: Convert to fraction form
    478,655.38/660,534.42 = 263,789.92/x
  3. Step 3: Cross multiply
    478,655.38x = 660,534.42 × 263,789.92
  4. Step 4: Simplify right side
    478,655.38x = 174,242,321,809.05
  5. Step 5: Solve for x
    x = 174,242,321,809.05/478,655.38
  6. Step 6: Final answer
    x = 364,024.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.