Home / 1,385,128.80-2,077,693.20-486,709.20

Finding the Fourth Proportional to 1,385,128.80, 2,077,693.20 and 486,709.20

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Solution

The fourth proportional to 1,385,128.80, 2,077,693.20 and 486,709.20 is: 730,063.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,385,128.80 : 2,077,693.20 = 486,709.20 : x
  2. Step 2: Convert to fraction form
    1,385,128.80/2,077,693.20 = 486,709.20/x
  3. Step 3: Cross multiply
    1,385,128.80x = 2,077,693.20 × 486,709.20
  4. Step 4: Simplify right side
    1,385,128.80x = 1,011,232,395,217.44
  5. Step 5: Solve for x
    x = 1,011,232,395,217.44/1,385,128.80
  6. Step 6: Final answer
    x = 730,063.80

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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.