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Finding the Fourth Proportional to 478,565.61, 660,434.66 and 263,719.52

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Solution

The fourth proportional to 478,565.61, 660,434.66 and 263,719.52 is: 363,940.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,565.61 : 660,434.66 = 263,719.52 : x
  2. Step 2: Convert to fraction form
    478,565.61/660,434.66 = 263,719.52/x
  3. Step 3: Cross multiply
    478,565.61x = 660,434.66 × 263,719.52
  4. Step 4: Simplify right side
    478,565.61x = 174,169,506,905.79
  5. Step 5: Solve for x
    x = 174,169,506,905.79/478,565.61
  6. Step 6: Final answer
    x = 363,940.71

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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.