Home / 724,813.40-1,087,220.10-658,328.60

Finding the Fourth Proportional to 724,813.40, 1,087,220.10 and 658,328.60

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Solution

The fourth proportional to 724,813.40, 1,087,220.10 and 658,328.60 is: 987,492.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,813.40 : 1,087,220.10 = 658,328.60 : x
  2. Step 2: Convert to fraction form
    724,813.40/1,087,220.10 = 658,328.60/x
  3. Step 3: Cross multiply
    724,813.40x = 1,087,220.10 × 658,328.60
  4. Step 4: Simplify right side
    724,813.40x = 715,748,086,324.86
  5. Step 5: Solve for x
    x = 715,748,086,324.86/724,813.40
  6. Step 6: Final answer
    x = 987,492.90

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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.