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Finding the Fourth Proportional to 880,762.59, 1,215,458.60 and 478,354.59

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Solution

The fourth proportional to 880,762.59, 1,215,458.60 and 478,354.59 is: 660,132.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    880,762.59 : 1,215,458.60 = 478,354.59 : x
  2. Step 2: Convert to fraction form
    880,762.59/1,215,458.60 = 478,354.59/x
  3. Step 3: Cross multiply
    880,762.59x = 1,215,458.60 × 478,354.59
  4. Step 4: Simplify right side
    880,762.59x = 581,420,197,873.20
  5. Step 5: Solve for x
    x = 581,420,197,873.20/880,762.59
  6. Step 6: Final answer
    x = 660,132.71

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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.