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Finding the Fourth Proportional to 1,230,558.60, 1,845,837.90 and 915,630.60

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Solution

The fourth proportional to 1,230,558.60, 1,845,837.90 and 915,630.60 is: 1,373,445.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,230,558.60 : 1,845,837.90 = 915,630.60 : x
  2. Step 2: Convert to fraction form
    1,230,558.60/1,845,837.90 = 915,630.60/x
  3. Step 3: Cross multiply
    1,230,558.60x = 1,845,837.90 × 915,630.60
  4. Step 4: Simplify right side
    1,230,558.60x = 1,690,105,663,879.74
  5. Step 5: Solve for x
    x = 1,690,105,663,879.74/1,230,558.60
  6. Step 6: Final answer
    x = 1,373,445.90

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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.