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Finding the Fourth Proportional to 614,743.80, 922,806.90 and 475,121.40

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Solution

The fourth proportional to 614,743.80, 922,806.90 and 475,121.40 is: 713,216.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    614,743.80 : 922,806.90 = 475,121.40 : x
  2. Step 2: Convert to fraction form
    614,743.80/922,806.90 = 475,121.40/x
  3. Step 3: Cross multiply
    614,743.80x = 922,806.90 × 475,121.40
  4. Step 4: Simplify right side
    614,743.80x = 438,445,306,257.66
  5. Step 5: Solve for x
    x = 438,445,306,257.66/614,743.80
  6. Step 6: Final answer
    x = 713,216.31

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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.