Home / 724,280.60-1,086,420.90-424,904.60

Finding the Fourth Proportional to 724,280.60, 1,086,420.90 and 424,904.60

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Solution

The fourth proportional to 724,280.60, 1,086,420.90 and 424,904.60 is: 637,356.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,280.60 : 1,086,420.90 = 424,904.60 : x
  2. Step 2: Convert to fraction form
    724,280.60/1,086,420.90 = 424,904.60/x
  3. Step 3: Cross multiply
    724,280.60x = 1,086,420.90 × 424,904.60
  4. Step 4: Simplify right side
    724,280.60x = 461,625,237,946.14
  5. Step 5: Solve for x
    x = 461,625,237,946.14/724,280.60
  6. Step 6: Final answer
    x = 637,356.90

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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.