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Finding the Fourth Proportional to 876,854.32, 1,315,319.75 and 277,859.62

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Solution

The fourth proportional to 876,854.32, 1,315,319.75 and 277,859.62 is: 416,801.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    876,854.32 : 1,315,319.75 = 277,859.62 : x
  2. Step 2: Convert to fraction form
    876,854.32/1,315,319.75 = 277,859.62/x
  3. Step 3: Cross multiply
    876,854.32x = 1,315,319.75 × 277,859.62
  4. Step 4: Simplify right side
    876,854.32x = 365,474,245,913.50
  5. Step 5: Solve for x
    x = 365,474,245,913.50/876,854.32
  6. Step 6: Final answer
    x = 416,801.56

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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.