Home / 880,715.52-1,215,394.56-478,310.40

Finding the Fourth Proportional to 880,715.52, 1,215,394.56 and 478,310.40

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Solution

The fourth proportional to 880,715.52, 1,215,394.56 and 478,310.40 is: 660,072.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    880,715.52 : 1,215,394.56 = 478,310.40 : x
  2. Step 2: Convert to fraction form
    880,715.52/1,215,394.56 = 478,310.40/x
  3. Step 3: Cross multiply
    880,715.52x = 1,215,394.56 × 478,310.40
  4. Step 4: Simplify right side
    880,715.52x = 581,335,858,151.42
  5. Step 5: Solve for x
    x = 581,335,858,151.42/880,715.52
  6. Step 6: Final answer
    x = 660,072.23

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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.