Home / 718,337.40-1,077,511.48-318,870.78

Finding the Fourth Proportional to 718,337.40, 1,077,511.48 and 318,870.78

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Solution

The fourth proportional to 718,337.40, 1,077,511.48 and 318,870.78 is: 478,308.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,337.40 : 1,077,511.48 = 318,870.78 : x
  2. Step 2: Convert to fraction form
    718,337.40/1,077,511.48 = 318,870.78/x
  3. Step 3: Cross multiply
    718,337.40x = 1,077,511.48 × 318,870.78
  4. Step 4: Simplify right side
    718,337.40x = 343,586,926,086.55
  5. Step 5: Solve for x
    x = 343,586,926,086.55/718,337.40
  6. Step 6: Final answer
    x = 478,308.56

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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.