Home / 744,400.80-1,116,601.20-478,680.30

Finding the Fourth Proportional to 744,400.80, 1,116,601.20 and 478,680.30

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Solution

The fourth proportional to 744,400.80, 1,116,601.20 and 478,680.30 is: 718,020.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    744,400.80 : 1,116,601.20 = 478,680.30 : x
  2. Step 2: Convert to fraction form
    744,400.80/1,116,601.20 = 478,680.30/x
  3. Step 3: Cross multiply
    744,400.80x = 1,116,601.20 × 478,680.30
  4. Step 4: Simplify right side
    744,400.80x = 534,494,997,396.36
  5. Step 5: Solve for x
    x = 534,494,997,396.36/744,400.80
  6. Step 6: Final answer
    x = 718,020.45

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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.