Home / 778,902.40-1,168,353.60-479,720.80

Finding the Fourth Proportional to 778,902.40, 1,168,353.60 and 479,720.80

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Solution

The fourth proportional to 778,902.40, 1,168,353.60 and 479,720.80 is: 719,581.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,902.40 : 1,168,353.60 = 479,720.80 : x
  2. Step 2: Convert to fraction form
    778,902.40/1,168,353.60 = 479,720.80/x
  3. Step 3: Cross multiply
    778,902.40x = 1,168,353.60 × 479,720.80
  4. Step 4: Simplify right side
    778,902.40x = 560,483,523,674.88
  5. Step 5: Solve for x
    x = 560,483,523,674.88/778,902.40
  6. Step 6: Final answer
    x = 719,581.20

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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.