Home / 876,812.92-1,209,895.13-489,649.85

Finding the Fourth Proportional to 876,812.92, 1,209,895.13 and 489,649.85

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Solution

The fourth proportional to 876,812.92, 1,209,895.13 and 489,649.85 is: 675,657.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    876,812.92 : 1,209,895.13 = 489,649.85 : x
  2. Step 2: Convert to fraction form
    876,812.92/1,209,895.13 = 489,649.85/x
  3. Step 3: Cross multiply
    876,812.92x = 1,209,895.13 × 489,649.85
  4. Step 4: Simplify right side
    876,812.92x = 592,424,969,553.79
  5. Step 5: Solve for x
    x = 592,424,969,553.79/876,812.92
  6. Step 6: Final answer
    x = 675,657.21

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1.5x scale

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.