Home / 991,007.43-1,486,732.65-317,129.22

Finding the Fourth Proportional to 991,007.43, 1,486,732.65 and 317,129.22

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Solution

The fourth proportional to 991,007.43, 1,486,732.65 and 317,129.22 is: 475,764.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    991,007.43 : 1,486,732.65 = 317,129.22 : x
  2. Step 2: Convert to fraction form
    991,007.43/1,486,732.65 = 317,129.22/x
  3. Step 3: Cross multiply
    991,007.43x = 1,486,732.65 × 317,129.22
  4. Step 4: Simplify right side
    991,007.43x = 471,486,365,643.03
  5. Step 5: Solve for x
    x = 471,486,365,643.03/991,007.43
  6. Step 6: Final answer
    x = 475,764.71

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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.