Home / 820,445.80-1,230,668.70-483,140.20

Finding the Fourth Proportional to 820,445.80, 1,230,668.70 and 483,140.20

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Solution

The fourth proportional to 820,445.80, 1,230,668.70 and 483,140.20 is: 724,710.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,445.80 : 1,230,668.70 = 483,140.20 : x
  2. Step 2: Convert to fraction form
    820,445.80/1,230,668.70 = 483,140.20/x
  3. Step 3: Cross multiply
    820,445.80x = 1,230,668.70 × 483,140.20
  4. Step 4: Simplify right side
    820,445.80x = 594,585,521,851.74
  5. Step 5: Solve for x
    x = 594,585,521,851.74/820,445.80
  6. Step 6: Final answer
    x = 724,710.30

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Double scale
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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.