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Finding the Fourth Proportional to 679,648.60, 1,019,468.44 and 230,685.64

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Solution

The fourth proportional to 679,648.60, 1,019,468.44 and 230,685.64 is: 346,026.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,648.60 : 1,019,468.44 = 230,685.64 : x
  2. Step 2: Convert to fraction form
    679,648.60/1,019,468.44 = 230,685.64/x
  3. Step 3: Cross multiply
    679,648.60x = 1,019,468.44 × 230,685.64
  4. Step 4: Simplify right side
    679,648.60x = 235,176,729,541.20
  5. Step 5: Solve for x
    x = 235,176,729,541.20/679,648.60
  6. Step 6: Final answer
    x = 346,026.95

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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.