Home / 855,163.80-1,281,708.90-381,346.20

Finding the Fourth Proportional to 855,163.80, 1,281,708.90 and 381,346.20

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Solution

The fourth proportional to 855,163.80, 1,281,708.90 and 381,346.20 is: 571,556.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    855,163.80 : 1,281,708.90 = 381,346.20 : x
  2. Step 2: Convert to fraction form
    855,163.80/1,281,708.90 = 381,346.20/x
  3. Step 3: Cross multiply
    855,163.80x = 1,281,708.90 × 381,346.20
  4. Step 4: Simplify right side
    855,163.80x = 488,774,818,521.18
  5. Step 5: Solve for x
    x = 488,774,818,521.18/855,163.80
  6. Step 6: Final answer
    x = 571,556.96

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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.