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Finding the Fourth Proportional to 777,278.72, 1,072,648.32 and 437,752.96

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Solution

The fourth proportional to 777,278.72, 1,072,648.32 and 437,752.96 is: 604,101.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    777,278.72 : 1,072,648.32 = 437,752.96 : x
  2. Step 2: Convert to fraction form
    777,278.72/1,072,648.32 = 437,752.96/x
  3. Step 3: Cross multiply
    777,278.72x = 1,072,648.32 × 437,752.96
  4. Step 4: Simplify right side
    777,278.72x = 469,554,977,119.03
  5. Step 5: Solve for x
    x = 469,554,977,119.03/777,278.72
  6. Step 6: Final answer
    x = 604,101.16

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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.