Home / 687,422.50-1,030,887.70-238,022.71

Finding the Fourth Proportional to 687,422.50, 1,030,887.70 and 238,022.71

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Solution

The fourth proportional to 687,422.50, 1,030,887.70 and 238,022.71 is: 356,948.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,422.50 : 1,030,887.70 = 238,022.71 : x
  2. Step 2: Convert to fraction form
    687,422.50/1,030,887.70 = 238,022.71/x
  3. Step 3: Cross multiply
    687,422.50x = 1,030,887.70 × 238,022.71
  4. Step 4: Simplify right side
    687,422.50x = 245,374,680,887.39
  5. Step 5: Solve for x
    x = 245,374,680,887.39/687,422.50
  6. Step 6: Final answer
    x = 356,948.87

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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.