Home / 755,145.40-1,132,718.10-419,222.20

Finding the Fourth Proportional to 755,145.40, 1,132,718.10 and 419,222.20

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Solution

The fourth proportional to 755,145.40, 1,132,718.10 and 419,222.20 is: 628,833.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    755,145.40 : 1,132,718.10 = 419,222.20 : x
  2. Step 2: Convert to fraction form
    755,145.40/1,132,718.10 = 419,222.20/x
  3. Step 3: Cross multiply
    755,145.40x = 1,132,718.10 × 419,222.20
  4. Step 4: Simplify right side
    755,145.40x = 474,860,573,861.82
  5. Step 5: Solve for x
    x = 474,860,573,861.82/755,145.40
  6. Step 6: Final answer
    x = 628,833.30

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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.