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Finding the Fourth Proportional to 873,652.80, 1,310,479.20 and 695,193.60

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Solution

The fourth proportional to 873,652.80, 1,310,479.20 and 695,193.60 is: 1,042,790.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    873,652.80 : 1,310,479.20 = 695,193.60 : x
  2. Step 2: Convert to fraction form
    873,652.80/1,310,479.20 = 695,193.60/x
  3. Step 3: Cross multiply
    873,652.80x = 1,310,479.20 × 695,193.60
  4. Step 4: Simplify right side
    873,652.80x = 911,036,752,773.12
  5. Step 5: Solve for x
    x = 911,036,752,773.12/873,652.80
  6. Step 6: Final answer
    x = 1,042,790.40

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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.