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Finding the Fourth Proportional to 820,153.80, 1,230,230.70 and 482,848.20

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Solution

The fourth proportional to 820,153.80, 1,230,230.70 and 482,848.20 is: 724,272.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,153.80 : 1,230,230.70 = 482,848.20 : x
  2. Step 2: Convert to fraction form
    820,153.80/1,230,230.70 = 482,848.20/x
  3. Step 3: Cross multiply
    820,153.80x = 1,230,230.70 × 482,848.20
  4. Step 4: Simplify right side
    820,153.80x = 594,014,679,079.74
  5. Step 5: Solve for x
    x = 594,014,679,079.74/820,153.80
  6. Step 6: Final answer
    x = 724,272.30

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Similar ratio
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1.5x scale

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.