Home / 783,487.20-1,176,459.60-451,711.20

Finding the Fourth Proportional to 783,487.20, 1,176,459.60 and 451,711.20

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Solution

The fourth proportional to 783,487.20, 1,176,459.60 and 451,711.20 is: 678,275.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    783,487.20 : 1,176,459.60 = 451,711.20 : x
  2. Step 2: Convert to fraction form
    783,487.20/1,176,459.60 = 451,711.20/x
  3. Step 3: Cross multiply
    783,487.20x = 1,176,459.60 × 451,711.20
  4. Step 4: Simplify right side
    783,487.20x = 531,419,977,667.52
  5. Step 5: Solve for x
    x = 531,419,977,667.52/783,487.20
  6. Step 6: Final answer
    x = 678,275.25

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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.