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Finding the Fourth Proportional to 777,291.12, 1,072,657.08 and 437,868.72

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Solution

The fourth proportional to 777,291.12, 1,072,657.08 and 437,868.72 is: 604,256.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    777,291.12 : 1,072,657.08 = 437,868.72 : x
  2. Step 2: Convert to fraction form
    777,291.12/1,072,657.08 = 437,868.72/x
  3. Step 3: Cross multiply
    777,291.12x = 1,072,657.08 × 437,868.72
  4. Step 4: Simplify right side
    777,291.12x = 469,682,982,618.54
  5. Step 5: Solve for x
    x = 469,682,982,618.54/777,291.12
  6. Step 6: Final answer
    x = 604,256.21

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.