Home / 1,238,121.92-1,708,679.40-694,432.10

Finding the Fourth Proportional to 1,238,121.92, 1,708,679.40 and 694,432.10

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Solution

The fourth proportional to 1,238,121.92, 1,708,679.40 and 694,432.10 is: 958,356.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,238,121.92 : 1,708,679.40 = 694,432.10 : x
  2. Step 2: Convert to fraction form
    1,238,121.92/1,708,679.40 = 694,432.10/x
  3. Step 3: Cross multiply
    1,238,121.92x = 1,708,679.40 × 694,432.10
  4. Step 4: Simplify right side
    1,238,121.92x = 1,186,561,823,968.74
  5. Step 5: Solve for x
    x = 1,186,561,823,968.74/1,238,121.92
  6. Step 6: Final answer
    x = 958,356.20

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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.