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Finding the Fourth Proportional to 625,964.10, 939,930.30 and 360,243.60

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Solution

The fourth proportional to 625,964.10, 939,930.30 and 360,243.60 is: 540,931.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,964.10 : 939,930.30 = 360,243.60 : x
  2. Step 2: Convert to fraction form
    625,964.10/939,930.30 = 360,243.60/x
  3. Step 3: Cross multiply
    625,964.10x = 939,930.30 × 360,243.60
  4. Step 4: Simplify right side
    625,964.10x = 338,603,875,021.08
  5. Step 5: Solve for x
    x = 338,603,875,021.08/625,964.10
  6. Step 6: Final answer
    x = 540,931.78

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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.