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Finding the Fourth Proportional to 1,983,798.80, 2,975,698.20 and 487,890.80

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Solution

The fourth proportional to 1,983,798.80, 2,975,698.20 and 487,890.80 is: 731,836.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,983,798.80 : 2,975,698.20 = 487,890.80 : x
  2. Step 2: Convert to fraction form
    1,983,798.80/2,975,698.20 = 487,890.80/x
  3. Step 3: Cross multiply
    1,983,798.80x = 2,975,698.20 × 487,890.80
  4. Step 4: Simplify right side
    1,983,798.80x = 1,451,815,775,356.56
  5. Step 5: Solve for x
    x = 1,451,815,775,356.56/1,983,798.80
  6. Step 6: Final answer
    x = 731,836.20

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Double scale
Find fourth proportional to 1,983,799.80, 2,975,699.70 and 487,891.80
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.