Home / 1,289,752.92-1,779,846.12-716,781.60

Finding the Fourth Proportional to 1,289,752.92, 1,779,846.12 and 716,781.60

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Solution

The fourth proportional to 1,289,752.92, 1,779,846.12 and 716,781.60 is: 989,151.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,289,752.92 : 1,779,846.12 = 716,781.60 : x
  2. Step 2: Convert to fraction form
    1,289,752.92/1,779,846.12 = 716,781.60/x
  3. Step 3: Cross multiply
    1,289,752.92x = 1,779,846.12 × 716,781.60
  4. Step 4: Simplify right side
    1,289,752.92x = 1,275,760,949,647.39
  5. Step 5: Solve for x
    x = 1,275,760,949,647.39/1,289,752.92
  6. Step 6: Final answer
    x = 989,151.43

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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.