Home / 755,303.40-1,132,955.10-419,380.20

Finding the Fourth Proportional to 755,303.40, 1,132,955.10 and 419,380.20

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Solution

The fourth proportional to 755,303.40, 1,132,955.10 and 419,380.20 is: 629,070.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    755,303.40 : 1,132,955.10 = 419,380.20 : x
  2. Step 2: Convert to fraction form
    755,303.40/1,132,955.10 = 419,380.20/x
  3. Step 3: Cross multiply
    755,303.40x = 1,132,955.10 × 419,380.20
  4. Step 4: Simplify right side
    755,303.40x = 475,138,936,429.02
  5. Step 5: Solve for x
    x = 475,138,936,429.02/755,303.40
  6. Step 6: Final answer
    x = 629,070.30

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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.