Home / 1,315,276.40-1,970,776.20-1,189,305.20

Finding the Fourth Proportional to 1,315,276.40, 1,970,776.20 and 1,189,305.20

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Solution

The fourth proportional to 1,315,276.40, 1,970,776.20 and 1,189,305.20 is: 1,782,024.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,315,276.40 : 1,970,776.20 = 1,189,305.20 : x
  2. Step 2: Convert to fraction form
    1,315,276.40/1,970,776.20 = 1,189,305.20/x
  3. Step 3: Cross multiply
    1,315,276.40x = 1,970,776.20 × 1,189,305.20
  4. Step 4: Simplify right side
    1,315,276.40x = 2,343,854,382,696.24
  5. Step 5: Solve for x
    x = 2,343,854,382,696.24/1,315,276.40
  6. Step 6: Final answer
    x = 1,782,024.21

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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.