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Finding the Fourth Proportional to 478,280.76, 660,057.36 and 263,420.76

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Solution

The fourth proportional to 478,280.76, 660,057.36 and 263,420.76 is: 363,537.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,280.76 : 660,057.36 = 263,420.76 : x
  2. Step 2: Convert to fraction form
    478,280.76/660,057.36 = 263,420.76/x
  3. Step 3: Cross multiply
    478,280.76x = 660,057.36 × 263,420.76
  4. Step 4: Simplify right side
    478,280.76x = 173,872,811,414.79
  5. Step 5: Solve for x
    x = 173,872,811,414.79/478,280.76
  6. Step 6: Final answer
    x = 363,537.12

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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.