Home / 858,016.40-1,287,024.60-821,613.20

Finding the Fourth Proportional to 858,016.40, 1,287,024.60 and 821,613.20

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Solution

The fourth proportional to 858,016.40, 1,287,024.60 and 821,613.20 is: 1,232,419.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,016.40 : 1,287,024.60 = 821,613.20 : x
  2. Step 2: Convert to fraction form
    858,016.40/1,287,024.60 = 821,613.20/x
  3. Step 3: Cross multiply
    858,016.40x = 1,287,024.60 × 821,613.20
  4. Step 4: Simplify right side
    858,016.40x = 1,057,436,400,084.72
  5. Step 5: Solve for x
    x = 1,057,436,400,084.72/858,016.40
  6. Step 6: Final answer
    x = 1,232,419.80

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1.5x scale

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.