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Finding the Fourth Proportional to 890,521.76, 1,229,046 and 551,099.36

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Solution

The fourth proportional to 890,521.76, 1,229,046 and 551,099.36 is: 760,595.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    890,521.76 : 1,229,046 = 551,099.36 : x
  2. Step 2: Convert to fraction form
    890,521.76/1,229,046 = 551,099.36/x
  3. Step 3: Cross multiply
    890,521.76x = 1,229,046 × 551,099.36
  4. Step 4: Simplify right side
    890,521.76x = 677,326,464,010.56
  5. Step 5: Solve for x
    x = 677,326,464,010.56/890,521.76
  6. Step 6: Final answer
    x = 760,595.07

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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.