Home / 721,520.40-1,082,280.60-604,297.20

Finding the Fourth Proportional to 721,520.40, 1,082,280.60 and 604,297.20

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Solution

The fourth proportional to 721,520.40, 1,082,280.60 and 604,297.20 is: 906,445.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,520.40 : 1,082,280.60 = 604,297.20 : x
  2. Step 2: Convert to fraction form
    721,520.40/1,082,280.60 = 604,297.20/x
  3. Step 3: Cross multiply
    721,520.40x = 1,082,280.60 × 604,297.20
  4. Step 4: Simplify right side
    721,520.40x = 654,019,136,194.32
  5. Step 5: Solve for x
    x = 654,019,136,194.32/721,520.40
  6. Step 6: Final answer
    x = 906,445.80

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Double scale
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Similar ratio
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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.