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Finding the Fourth Proportional to 863,617.60, 1,295,426.40 and 807,630.40

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Solution

The fourth proportional to 863,617.60, 1,295,426.40 and 807,630.40 is: 1,211,445.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    863,617.60 : 1,295,426.40 = 807,630.40 : x
  2. Step 2: Convert to fraction form
    863,617.60/1,295,426.40 = 807,630.40/x
  3. Step 3: Cross multiply
    863,617.60x = 1,295,426.40 × 807,630.40
  4. Step 4: Simplify right side
    863,617.60x = 1,046,225,741,602.56
  5. Step 5: Solve for x
    x = 1,046,225,741,602.56/863,617.60
  6. Step 6: Final answer
    x = 1,211,445.60

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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.