Home / 865,621.20-1,298,431.80-824,286.90

Finding the Fourth Proportional to 865,621.20, 1,298,431.80 and 824,286.90

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Solution

The fourth proportional to 865,621.20, 1,298,431.80 and 824,286.90 is: 1,236,430.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    865,621.20 : 1,298,431.80 = 824,286.90 : x
  2. Step 2: Convert to fraction form
    865,621.20/1,298,431.80 = 824,286.90/x
  3. Step 3: Cross multiply
    865,621.20x = 1,298,431.80 × 824,286.90
  4. Step 4: Simplify right side
    865,621.20x = 1,070,280,323,283.42
  5. Step 5: Solve for x
    x = 1,070,280,323,283.42/865,621.20
  6. Step 6: Final answer
    x = 1,236,430.35

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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.