Home / 718,775.60-1,078,163.40-438,839.60

Finding the Fourth Proportional to 718,775.60, 1,078,163.40 and 438,839.60

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Solution

The fourth proportional to 718,775.60, 1,078,163.40 and 438,839.60 is: 658,259.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,775.60 : 1,078,163.40 = 438,839.60 : x
  2. Step 2: Convert to fraction form
    718,775.60/1,078,163.40 = 438,839.60/x
  3. Step 3: Cross multiply
    718,775.60x = 1,078,163.40 × 438,839.60
  4. Step 4: Simplify right side
    718,775.60x = 473,140,795,190.64
  5. Step 5: Solve for x
    x = 473,140,795,190.64/718,775.60
  6. Step 6: Final answer
    x = 658,259.40

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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.