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Finding the Fourth Proportional to 489,817.40, 734,726.10 and 432,080.60

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Solution

The fourth proportional to 489,817.40, 734,726.10 and 432,080.60 is: 648,120.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,817.40 : 734,726.10 = 432,080.60 : x
  2. Step 2: Convert to fraction form
    489,817.40/734,726.10 = 432,080.60/x
  3. Step 3: Cross multiply
    489,817.40x = 734,726.10 × 432,080.60
  4. Step 4: Simplify right side
    489,817.40x = 317,460,894,123.66
  5. Step 5: Solve for x
    x = 317,460,894,123.66/489,817.40
  6. Step 6: Final answer
    x = 648,120.90

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Similar ratio
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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.