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Finding the Fourth Proportional to 608,659.60, 912,989.40 and 293,040.40

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Solution

The fourth proportional to 608,659.60, 912,989.40 and 293,040.40 is: 439,560.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    608,659.60 : 912,989.40 = 293,040.40 : x
  2. Step 2: Convert to fraction form
    608,659.60/912,989.40 = 293,040.40/x
  3. Step 3: Cross multiply
    608,659.60x = 912,989.40 × 293,040.40
  4. Step 4: Simplify right side
    608,659.60x = 267,542,778,971.76
  5. Step 5: Solve for x
    x = 267,542,778,971.76/608,659.60
  6. Step 6: Final answer
    x = 439,560.60

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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.