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Finding the Fourth Proportional to 721,999.18, 996,352.06 and 415,963.16

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Solution

The fourth proportional to 721,999.18, 996,352.06 and 415,963.16 is: 574,025.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,999.18 : 996,352.06 = 415,963.16 : x
  2. Step 2: Convert to fraction form
    721,999.18/996,352.06 = 415,963.16/x
  3. Step 3: Cross multiply
    721,999.18x = 996,352.06 × 415,963.16
  4. Step 4: Simplify right side
    721,999.18x = 414,445,750,152.99
  5. Step 5: Solve for x
    x = 414,445,750,152.99/721,999.18
  6. Step 6: Final answer
    x = 574,025.23

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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.