Home / 578,748.40-868,122.60-389,791.60

Finding the Fourth Proportional to 578,748.40, 868,122.60 and 389,791.60

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Solution

The fourth proportional to 578,748.40, 868,122.60 and 389,791.60 is: 584,687.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,748.40 : 868,122.60 = 389,791.60 : x
  2. Step 2: Convert to fraction form
    578,748.40/868,122.60 = 389,791.60/x
  3. Step 3: Cross multiply
    578,748.40x = 868,122.60 × 389,791.60
  4. Step 4: Simplify right side
    578,748.40x = 338,386,897,250.16
  5. Step 5: Solve for x
    x = 338,386,897,250.16/578,748.40
  6. Step 6: Final answer
    x = 584,687.40

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Half scale
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Double scale
Find fourth proportional to 578,749.40, 868,124.10 and 389,792.60
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.