Home / 427,111.68-588,686.28-390,912.62

Finding the Fourth Proportional to 427,111.68, 588,686.28 and 390,912.62

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Solution

The fourth proportional to 427,111.68, 588,686.28 and 390,912.62 is: 538,793.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,111.68 : 588,686.28 = 390,912.62 : x
  2. Step 2: Convert to fraction form
    427,111.68/588,686.28 = 390,912.62/x
  3. Step 3: Cross multiply
    427,111.68x = 588,686.28 × 390,912.62
  4. Step 4: Simplify right side
    427,111.68x = 230,124,896,072.85
  5. Step 5: Solve for x
    x = 230,124,896,072.85/427,111.68
  6. Step 6: Final answer
    x = 538,793.26

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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.