Home / 1,443,287.62-1,991,742.20-780,999.49

Finding the Fourth Proportional to 1,443,287.62, 1,991,742.20 and 780,999.49

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Solution

The fourth proportional to 1,443,287.62, 1,991,742.20 and 780,999.49 is: 1,077,782.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,443,287.62 : 1,991,742.20 = 780,999.49 : x
  2. Step 2: Convert to fraction form
    1,443,287.62/1,991,742.20 = 780,999.49/x
  3. Step 3: Cross multiply
    1,443,287.62x = 1,991,742.20 × 780,999.49
  4. Step 4: Simplify right side
    1,443,287.62x = 1,555,549,642,411.48
  5. Step 5: Solve for x
    x = 1,555,549,642,411.48/1,443,287.62
  6. Step 6: Final answer
    x = 1,077,782.16

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.