Home / 638,310.40-956,718.24-410,315.20

Finding the Fourth Proportional to 638,310.40, 956,718.24 and 410,315.20

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Solution

The fourth proportional to 638,310.40, 956,718.24 and 410,315.20 is: 614,992.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,310.40 : 956,718.24 = 410,315.20 : x
  2. Step 2: Convert to fraction form
    638,310.40/956,718.24 = 410,315.20/x
  3. Step 3: Cross multiply
    638,310.40x = 956,718.24 × 410,315.20
  4. Step 4: Simplify right side
    638,310.40x = 392,556,035,989.25
  5. Step 5: Solve for x
    x = 392,556,035,989.25/638,310.40
  6. Step 6: Final answer
    x = 614,992.39

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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.