Home / 312,432,882.30-468,649,323.45-261,792,459.90

Finding the Fourth Proportional to 312,432,882.30, 468,649,323.45 and 261,792,459.90

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Solution

The fourth proportional to 312,432,882.30, 468,649,323.45 and 261,792,459.90 is: 392,688,689.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,432,882.30 : 468,649,323.45 = 261,792,459.90 : x
  2. Step 2: Convert to fraction form
    312,432,882.30/468,649,323.45 = 261,792,459.90/x
  3. Step 3: Cross multiply
    312,432,882.30x = 468,649,323.45 × 261,792,459.90
  4. Step 4: Simplify right side
    312,432,882.30x = 122,688,859,216,446,256
  5. Step 5: Solve for x
    x = 122,688,859,216,446,256/312,432,882.30
  6. Step 6: Final answer
    x = 392,688,689.85

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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.