Home / 1,380,012.80-2,070,019.20-433,479.20

Finding the Fourth Proportional to 1,380,012.80, 2,070,019.20 and 433,479.20

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Solution

The fourth proportional to 1,380,012.80, 2,070,019.20 and 433,479.20 is: 650,218.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,380,012.80 : 2,070,019.20 = 433,479.20 : x
  2. Step 2: Convert to fraction form
    1,380,012.80/2,070,019.20 = 433,479.20/x
  3. Step 3: Cross multiply
    1,380,012.80x = 2,070,019.20 × 433,479.20
  4. Step 4: Simplify right side
    1,380,012.80x = 897,310,266,800.64
  5. Step 5: Solve for x
    x = 897,310,266,800.64/1,380,012.80
  6. Step 6: Final answer
    x = 650,218.80

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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.