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Finding the Fourth Proportional to 781,850.56, 1,078,862.56 and 437,705.28

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Solution

The fourth proportional to 781,850.56, 1,078,862.56 and 437,705.28 is: 603,982.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    781,850.56 : 1,078,862.56 = 437,705.28 : x
  2. Step 2: Convert to fraction form
    781,850.56/1,078,862.56 = 437,705.28/x
  3. Step 3: Cross multiply
    781,850.56x = 1,078,862.56 × 437,705.28
  4. Step 4: Simplify right side
    781,850.56x = 472,223,838,906.32
  5. Step 5: Solve for x
    x = 472,223,838,906.32/781,850.56
  6. Step 6: Final answer
    x = 603,982.22

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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.