Home / 870,960.92-1,201,895.20-489,003.80

Finding the Fourth Proportional to 870,960.92, 1,201,895.20 and 489,003.80

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Solution

The fourth proportional to 870,960.92, 1,201,895.20 and 489,003.80 is: 674,807.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    870,960.92 : 1,201,895.20 = 489,003.80 : x
  2. Step 2: Convert to fraction form
    870,960.92/1,201,895.20 = 489,003.80/x
  3. Step 3: Cross multiply
    870,960.92x = 1,201,895.20 × 489,003.80
  4. Step 4: Simplify right side
    870,960.92x = 587,731,320,001.76
  5. Step 5: Solve for x
    x = 587,731,320,001.76/870,960.92
  6. Step 6: Final answer
    x = 674,807.91

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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.