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Finding the Fourth Proportional to 489,727.80, 734,591.70 and 470,374.20

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Solution

The fourth proportional to 489,727.80, 734,591.70 and 470,374.20 is: 705,561.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,727.80 : 734,591.70 = 470,374.20 : x
  2. Step 2: Convert to fraction form
    489,727.80/734,591.70 = 470,374.20/x
  3. Step 3: Cross multiply
    489,727.80x = 734,591.70 × 470,374.20
  4. Step 4: Simplify right side
    489,727.80x = 345,532,983,214.14
  5. Step 5: Solve for x
    x = 345,532,983,214.14/489,727.80
  6. Step 6: Final answer
    x = 705,561.30

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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.