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Finding the Fourth Proportional to 687,599.60, 948,839.94 and 381,651.92

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Solution

The fourth proportional to 687,599.60, 948,839.94 and 381,651.92 is: 526,653.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,599.60 : 948,839.94 = 381,651.92 : x
  2. Step 2: Convert to fraction form
    687,599.60/948,839.94 = 381,651.92/x
  3. Step 3: Cross multiply
    687,599.60x = 948,839.94 × 381,651.92
  4. Step 4: Simplify right side
    687,599.60x = 362,126,584,873.69
  5. Step 5: Solve for x
    x = 362,126,584,873.69/687,599.60
  6. Step 6: Final answer
    x = 526,653.28

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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.