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Finding the Fourth Proportional to 687,600.48, 948,841.14 and 381,652.81

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Solution

The fourth proportional to 687,600.48, 948,841.14 and 381,652.81 is: 526,654.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,600.48 : 948,841.14 = 381,652.81 : x
  2. Step 2: Convert to fraction form
    687,600.48/948,841.14 = 381,652.81/x
  3. Step 3: Cross multiply
    687,600.48x = 948,841.14 × 381,652.81
  4. Step 4: Simplify right side
    687,600.48x = 362,127,887,324.60
  5. Step 5: Solve for x
    x = 362,127,887,324.60/687,600.48
  6. Step 6: Final answer
    x = 526,654.50

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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.