Home / 625,401.60-863,146.77-395,980.17

Finding the Fourth Proportional to 625,401.60, 863,146.77 and 395,980.17

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Solution

The fourth proportional to 625,401.60, 863,146.77 and 395,980.17 is: 546,511.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,401.60 : 863,146.77 = 395,980.17 : x
  2. Step 2: Convert to fraction form
    625,401.60/863,146.77 = 395,980.17/x
  3. Step 3: Cross multiply
    625,401.60x = 863,146.77 × 395,980.17
  4. Step 4: Simplify right side
    625,401.60x = 341,789,004,719.55
  5. Step 5: Solve for x
    x = 341,789,004,719.55/625,401.60
  6. Step 6: Final answer
    x = 546,511.24

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1.5x scale

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.