Home / 670,515.20-1,005,772.80-270,950.30

Finding the Fourth Proportional to 670,515.20, 1,005,772.80 and 270,950.30

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Solution

The fourth proportional to 670,515.20, 1,005,772.80 and 270,950.30 is: 406,425.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    670,515.20 : 1,005,772.80 = 270,950.30 : x
  2. Step 2: Convert to fraction form
    670,515.20/1,005,772.80 = 270,950.30/x
  3. Step 3: Cross multiply
    670,515.20x = 1,005,772.80 × 270,950.30
  4. Step 4: Simplify right side
    670,515.20x = 272,514,441,891.84
  5. Step 5: Solve for x
    x = 272,514,441,891.84/670,515.20
  6. Step 6: Final answer
    x = 406,425.45

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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.