Home / 989,760.65-1,485,690.80-876,642.78

Finding the Fourth Proportional to 989,760.65, 1,485,690.80 and 876,642.78

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Solution

The fourth proportional to 989,760.65, 1,485,690.80 and 876,642.78 is: 1,315,894.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    989,760.65 : 1,485,690.80 = 876,642.78 : x
  2. Step 2: Convert to fraction form
    989,760.65/1,485,690.80 = 876,642.78/x
  3. Step 3: Cross multiply
    989,760.65x = 1,485,690.80 × 876,642.78
  4. Step 4: Simplify right side
    989,760.65x = 1,302,420,113,132.42
  5. Step 5: Solve for x
    x = 1,302,420,113,132.42/989,760.65
  6. Step 6: Final answer
    x = 1,315,894.01

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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.