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Finding the Fourth Proportional to 863,445.60, 1,292,835.60 and 676,821.60

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Solution

The fourth proportional to 863,445.60, 1,292,835.60 and 676,821.60 is: 1,013,403.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    863,445.60 : 1,292,835.60 = 676,821.60 : x
  2. Step 2: Convert to fraction form
    863,445.60/1,292,835.60 = 676,821.60/x
  3. Step 3: Cross multiply
    863,445.60x = 1,292,835.60 × 676,821.60
  4. Step 4: Simplify right side
    863,445.60x = 875,019,059,328.96
  5. Step 5: Solve for x
    x = 875,019,059,328.96/863,445.60
  6. Step 6: Final answer
    x = 1,013,403.81

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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.