Home / 812,669.20-1,216,930.20-646,781.20

Finding the Fourth Proportional to 812,669.20, 1,216,930.20 and 646,781.20

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Solution

The fourth proportional to 812,669.20, 1,216,930.20 and 646,781.20 is: 968,521.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,669.20 : 1,216,930.20 = 646,781.20 : x
  2. Step 2: Convert to fraction form
    812,669.20/1,216,930.20 = 646,781.20/x
  3. Step 3: Cross multiply
    812,669.20x = 1,216,930.20 × 646,781.20
  4. Step 4: Simplify right side
    812,669.20x = 787,087,575,072.24
  5. Step 5: Solve for x
    x = 787,087,575,072.24/812,669.20
  6. Step 6: Final answer
    x = 968,521.48

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1.5x scale

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.