Home / 870,989.46-1,201,965.45-489,024.45

Finding the Fourth Proportional to 870,989.46, 1,201,965.45 and 489,024.45

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Solution

The fourth proportional to 870,989.46, 1,201,965.45 and 489,024.45 is: 674,853.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    870,989.46 : 1,201,965.45 = 489,024.45 : x
  2. Step 2: Convert to fraction form
    870,989.46/1,201,965.45 = 489,024.45/x
  3. Step 3: Cross multiply
    870,989.46x = 1,201,965.45 × 489,024.45
  4. Step 4: Simplify right side
    870,989.46x = 587,790,493,105.25
  5. Step 5: Solve for x
    x = 587,790,493,105.25/870,989.46
  6. Step 6: Final answer
    x = 674,853.74

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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.