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Finding the Fourth Proportional to 478,264.38, 660,034.66 and 263,404.38

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Solution

The fourth proportional to 478,264.38, 660,034.66 and 263,404.38 is: 363,514.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,264.38 : 660,034.66 = 263,404.38 : x
  2. Step 2: Convert to fraction form
    478,264.38/660,034.66 = 263,404.38/x
  3. Step 3: Cross multiply
    478,264.38x = 660,034.66 × 263,404.38
  4. Step 4: Simplify right side
    478,264.38x = 173,856,020,395.81
  5. Step 5: Solve for x
    x = 173,856,020,395.81/478,264.38
  6. Step 6: Final answer
    x = 363,514.47

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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.