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Finding the Fourth Proportional to 625,778.48, 938,694.90 and 306,199.46

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Solution

The fourth proportional to 625,778.48, 938,694.90 and 306,199.46 is: 459,312.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,778.48 : 938,694.90 = 306,199.46 : x
  2. Step 2: Convert to fraction form
    625,778.48/938,694.90 = 306,199.46/x
  3. Step 3: Cross multiply
    625,778.48x = 938,694.90 × 306,199.46
  4. Step 4: Simplify right side
    625,778.48x = 287,427,871,484.75
  5. Step 5: Solve for x
    x = 287,427,871,484.75/625,778.48
  6. Step 6: Final answer
    x = 459,312.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.