Home / 781,311.78-1,078,252.20-437,127.17

Finding the Fourth Proportional to 781,311.78, 1,078,252.20 and 437,127.17

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Solution

The fourth proportional to 781,311.78, 1,078,252.20 and 437,127.17 is: 603,258.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    781,311.78 : 1,078,252.20 = 437,127.17 : x
  2. Step 2: Convert to fraction form
    781,311.78/1,078,252.20 = 437,127.17/x
  3. Step 3: Cross multiply
    781,311.78x = 1,078,252.20 × 437,127.17
  4. Step 4: Simplify right side
    781,311.78x = 471,333,327,341.01
  5. Step 5: Solve for x
    x = 471,333,327,341.01/781,311.78
  6. Step 6: Final answer
    x = 603,258.95

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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.