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Finding the Fourth Proportional to 663,021.80, 994,532.70 and 477,780.20

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Solution

The fourth proportional to 663,021.80, 994,532.70 and 477,780.20 is: 716,670.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,021.80 : 994,532.70 = 477,780.20 : x
  2. Step 2: Convert to fraction form
    663,021.80/994,532.70 = 477,780.20/x
  3. Step 3: Cross multiply
    663,021.80x = 994,532.70 × 477,780.20
  4. Step 4: Simplify right side
    663,021.80x = 475,168,032,312.54
  5. Step 5: Solve for x
    x = 475,168,032,312.54/663,021.80
  6. Step 6: Final answer
    x = 716,670.30

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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.