Home / 438,140.10-655,929-396,117.30

Finding the Fourth Proportional to 438,140.10, 655,929 and 396,117.30

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Solution

The fourth proportional to 438,140.10, 655,929 and 396,117.30 is: 593,017.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,140.10 : 655,929 = 396,117.30 : x
  2. Step 2: Convert to fraction form
    438,140.10/655,929 = 396,117.30/x
  3. Step 3: Cross multiply
    438,140.10x = 655,929 × 396,117.30
  4. Step 4: Simplify right side
    438,140.10x = 259,824,824,471.70
  5. Step 5: Solve for x
    x = 259,824,824,471.70/438,140.10
  6. Step 6: Final answer
    x = 593,017.68

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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.