Home / 711,461.28-982,147.44-420,981.52

Finding the Fourth Proportional to 711,461.28, 982,147.44 and 420,981.52

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Solution

The fourth proportional to 711,461.28, 982,147.44 and 420,981.52 is: 581,150.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,461.28 : 982,147.44 = 420,981.52 : x
  2. Step 2: Convert to fraction form
    711,461.28/982,147.44 = 420,981.52/x
  3. Step 3: Cross multiply
    711,461.28x = 982,147.44 × 420,981.52
  4. Step 4: Simplify right side
    711,461.28x = 413,465,922,155.31
  5. Step 5: Solve for x
    x = 413,465,922,155.31/711,461.28
  6. Step 6: Final answer
    x = 581,150.28

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Double scale
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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.