Home / 1,385,129.80-2,077,694.70-486,710.20

Finding the Fourth Proportional to 1,385,129.80, 2,077,694.70 and 486,710.20

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Solution

The fourth proportional to 1,385,129.80, 2,077,694.70 and 486,710.20 is: 730,065.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,385,129.80 : 2,077,694.70 = 486,710.20 : x
  2. Step 2: Convert to fraction form
    1,385,129.80/2,077,694.70 = 486,710.20/x
  3. Step 3: Cross multiply
    1,385,129.80x = 2,077,694.70 × 486,710.20
  4. Step 4: Simplify right side
    1,385,129.80x = 1,011,235,202,975.94
  5. Step 5: Solve for x
    x = 1,011,235,202,975.94/1,385,129.80
  6. Step 6: Final answer
    x = 730,065.30

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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.