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Finding the Fourth Proportional to 665,042.44, 915,825.60 and 577,787.20

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Solution

The fourth proportional to 665,042.44, 915,825.60 and 577,787.20 is: 795,666.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,042.44 : 915,825.60 = 577,787.20 : x
  2. Step 2: Convert to fraction form
    665,042.44/915,825.60 = 577,787.20/x
  3. Step 3: Cross multiply
    665,042.44x = 915,825.60 × 577,787.20
  4. Step 4: Simplify right side
    665,042.44x = 529,152,309,112.32
  5. Step 5: Solve for x
    x = 529,152,309,112.32/665,042.44
  6. Step 6: Final answer
    x = 795,666.98

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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.