Home / 724,897.40-1,087,346.10-658,412.60

Finding the Fourth Proportional to 724,897.40, 1,087,346.10 and 658,412.60

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Solution

The fourth proportional to 724,897.40, 1,087,346.10 and 658,412.60 is: 987,618.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,897.40 : 1,087,346.10 = 658,412.60 : x
  2. Step 2: Convert to fraction form
    724,897.40/1,087,346.10 = 658,412.60/x
  3. Step 3: Cross multiply
    724,897.40x = 1,087,346.10 × 658,412.60
  4. Step 4: Simplify right side
    724,897.40x = 715,922,372,800.86
  5. Step 5: Solve for x
    x = 715,922,372,800.86/724,897.40
  6. Step 6: Final answer
    x = 987,618.90

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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.