Home / 813,754.20-1,122,758.34-486,935.66

Finding the Fourth Proportional to 813,754.20, 1,122,758.34 and 486,935.66

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Solution

The fourth proportional to 813,754.20, 1,122,758.34 and 486,935.66 is: 671,838.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    813,754.20 : 1,122,758.34 = 486,935.66 : x
  2. Step 2: Convert to fraction form
    813,754.20/1,122,758.34 = 486,935.66/x
  3. Step 3: Cross multiply
    813,754.20x = 1,122,758.34 × 486,935.66
  4. Step 4: Simplify right side
    813,754.20x = 546,711,073,308.40
  5. Step 5: Solve for x
    x = 546,711,073,308.40/813,754.20
  6. Step 6: Final answer
    x = 671,838.10

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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.