Home / 919,498.80-1,379,248.20-414,301.80

Finding the Fourth Proportional to 919,498.80, 1,379,248.20 and 414,301.80

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Solution

The fourth proportional to 919,498.80, 1,379,248.20 and 414,301.80 is: 621,452.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,498.80 : 1,379,248.20 = 414,301.80 : x
  2. Step 2: Convert to fraction form
    919,498.80/1,379,248.20 = 414,301.80/x
  3. Step 3: Cross multiply
    919,498.80x = 1,379,248.20 × 414,301.80
  4. Step 4: Simplify right side
    919,498.80x = 571,425,011,906.76
  5. Step 5: Solve for x
    x = 571,425,011,906.76/919,498.80
  6. Step 6: Final answer
    x = 621,452.70

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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.