Home / 887,011.40-1,330,257.90-318,326.60

Finding the Fourth Proportional to 887,011.40, 1,330,257.90 and 318,326.60

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Solution

The fourth proportional to 887,011.40, 1,330,257.90 and 318,326.60 is: 477,396.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    887,011.40 : 1,330,257.90 = 318,326.60 : x
  2. Step 2: Convert to fraction form
    887,011.40/1,330,257.90 = 318,326.60/x
  3. Step 3: Cross multiply
    887,011.40x = 1,330,257.90 × 318,326.60
  4. Step 4: Simplify right side
    887,011.40x = 423,456,474,430.14
  5. Step 5: Solve for x
    x = 423,456,474,430.14/887,011.40
  6. Step 6: Final answer
    x = 477,396.88

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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.