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Finding the Fourth Proportional to 687,597.37, 948,836.80 and 381,649.66

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Solution

The fourth proportional to 687,597.37, 948,836.80 and 381,649.66 is: 526,650.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,597.37 : 948,836.80 = 381,649.66 : x
  2. Step 2: Convert to fraction form
    687,597.37/948,836.80 = 381,649.66/x
  3. Step 3: Cross multiply
    687,597.37x = 948,836.80 × 381,649.66
  4. Step 4: Simplify right side
    687,597.37x = 362,123,242,115.49
  5. Step 5: Solve for x
    x = 362,123,242,115.49/687,597.37
  6. Step 6: Final answer
    x = 526,650.13

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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.