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Finding the Fourth Proportional to 879,394.88, 1,318,200.78 and 347,290.76

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Solution

The fourth proportional to 879,394.88, 1,318,200.78 and 347,290.76 is: 520,584.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    879,394.88 : 1,318,200.78 = 347,290.76 : x
  2. Step 2: Convert to fraction form
    879,394.88/1,318,200.78 = 347,290.76/x
  3. Step 3: Cross multiply
    879,394.88x = 1,318,200.78 × 347,290.76
  4. Step 4: Simplify right side
    879,394.88x = 457,798,950,718.79
  5. Step 5: Solve for x
    x = 457,798,950,718.79/879,394.88
  6. Step 6: Final answer
    x = 520,584.05

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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.