Home / 820,147.40-1,230,221.10-503,577.80

Finding the Fourth Proportional to 820,147.40, 1,230,221.10 and 503,577.80

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Solution

The fourth proportional to 820,147.40, 1,230,221.10 and 503,577.80 is: 755,366.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,147.40 : 1,230,221.10 = 503,577.80 : x
  2. Step 2: Convert to fraction form
    820,147.40/1,230,221.10 = 503,577.80/x
  3. Step 3: Cross multiply
    820,147.40x = 1,230,221.10 × 503,577.80
  4. Step 4: Simplify right side
    820,147.40x = 619,512,035,051.58
  5. Step 5: Solve for x
    x = 619,512,035,051.58/820,147.40
  6. Step 6: Final answer
    x = 755,366.70

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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.