Home / 559,947.60-772,723.80-318,211.20

Finding the Fourth Proportional to 559,947.60, 772,723.80 and 318,211.20

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Solution

The fourth proportional to 559,947.60, 772,723.80 and 318,211.20 is: 439,129.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    559,947.60 : 772,723.80 = 318,211.20 : x
  2. Step 2: Convert to fraction form
    559,947.60/772,723.80 = 318,211.20/x
  3. Step 3: Cross multiply
    559,947.60x = 772,723.80 × 318,211.20
  4. Step 4: Simplify right side
    559,947.60x = 245,889,367,666.56
  5. Step 5: Solve for x
    x = 245,889,367,666.56/559,947.60
  6. Step 6: Final answer
    x = 439,129.25

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.