Home / 547,764.20-821,646.30-153,780.20

Finding the Fourth Proportional to 547,764.20, 821,646.30 and 153,780.20

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Solution

The fourth proportional to 547,764.20, 821,646.30 and 153,780.20 is: 230,670.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,764.20 : 821,646.30 = 153,780.20 : x
  2. Step 2: Convert to fraction form
    547,764.20/821,646.30 = 153,780.20/x
  3. Step 3: Cross multiply
    547,764.20x = 821,646.30 × 153,780.20
  4. Step 4: Simplify right side
    547,764.20x = 126,352,932,343.26
  5. Step 5: Solve for x
    x = 126,352,932,343.26/547,764.20
  6. Step 6: Final answer
    x = 230,670.30

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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.