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Finding the Fourth Proportional to 887,765.90, 1,225,125.88 and 479,875.64

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Solution

The fourth proportional to 887,765.90, 1,225,125.88 and 479,875.64 is: 662,233.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    887,765.90 : 1,225,125.88 = 479,875.64 : x
  2. Step 2: Convert to fraction form
    887,765.90/1,225,125.88 = 479,875.64/x
  3. Step 3: Cross multiply
    887,765.90x = 1,225,125.88 × 479,875.64
  4. Step 4: Simplify right side
    887,765.90x = 587,908,065,745.56
  5. Step 5: Solve for x
    x = 587,908,065,745.56/887,765.90
  6. Step 6: Final answer
    x = 662,233.21

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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.