Home / 847,474.39-1,271,211.60-315,129.43

Finding the Fourth Proportional to 847,474.39, 1,271,211.60 and 315,129.43

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Solution

The fourth proportional to 847,474.39, 1,271,211.60 and 315,129.43 is: 472,694.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    847,474.39 : 1,271,211.60 = 315,129.43 : x
  2. Step 2: Convert to fraction form
    847,474.39/1,271,211.60 = 315,129.43/x
  3. Step 3: Cross multiply
    847,474.39x = 1,271,211.60 × 315,129.43
  4. Step 4: Simplify right side
    847,474.39x = 400,596,186,917.39
  5. Step 5: Solve for x
    x = 400,596,186,917.39/847,474.39
  6. Step 6: Final answer
    x = 472,694.15

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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.