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Finding the Fourth Proportional to 703,876.16, 971,356.32 and 381,586.88

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Solution

The fourth proportional to 703,876.16, 971,356.32 and 381,586.88 is: 526,593.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    703,876.16 : 971,356.32 = 381,586.88 : x
  2. Step 2: Convert to fraction form
    703,876.16/971,356.32 = 381,586.88/x
  3. Step 3: Cross multiply
    703,876.16x = 971,356.32 × 381,586.88
  4. Step 4: Simplify right side
    703,876.16x = 370,656,827,517.08
  5. Step 5: Solve for x
    x = 370,656,827,517.08/703,876.16
  6. Step 6: Final answer
    x = 526,593.81

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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.