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Finding the Fourth Proportional to 768,117.20, 1,151,830.20 and 294,645.20

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Solution

The fourth proportional to 768,117.20, 1,151,830.20 and 294,645.20 is: 441,835.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    768,117.20 : 1,151,830.20 = 294,645.20 : x
  2. Step 2: Convert to fraction form
    768,117.20/1,151,830.20 = 294,645.20/x
  3. Step 3: Cross multiply
    768,117.20x = 1,151,830.20 × 294,645.20
  4. Step 4: Simplify right side
    768,117.20x = 339,381,239,645.04
  5. Step 5: Solve for x
    x = 339,381,239,645.04/768,117.20
  6. Step 6: Final answer
    x = 441,835.23

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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.