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Finding the Fourth Proportional to 609,842.94, 912,777.21 and 551,643.90

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Solution

The fourth proportional to 609,842.94, 912,777.21 and 551,643.90 is: 825,668.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    609,842.94 : 912,777.21 = 551,643.90 : x
  2. Step 2: Convert to fraction form
    609,842.94/912,777.21 = 551,643.90/x
  3. Step 3: Cross multiply
    609,842.94x = 912,777.21 × 551,643.90
  4. Step 4: Simplify right side
    609,842.94x = 503,527,979,955.52
  5. Step 5: Solve for x
    x = 503,527,979,955.52/609,842.94
  6. Step 6: Final answer
    x = 825,668.29

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.