Home / 621,811.76-858,023.08-392,282.06

Finding the Fourth Proportional to 621,811.76, 858,023.08 and 392,282.06

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Solution

The fourth proportional to 621,811.76, 858,023.08 and 392,282.06 is: 541,300.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,811.76 : 858,023.08 = 392,282.06 : x
  2. Step 2: Convert to fraction form
    621,811.76/858,023.08 = 392,282.06/x
  3. Step 3: Cross multiply
    621,811.76x = 858,023.08 × 392,282.06
  4. Step 4: Simplify right side
    621,811.76x = 336,587,056,079.12
  5. Step 5: Solve for x
    x = 336,587,056,079.12/621,811.76
  6. Step 6: Final answer
    x = 541,300.57

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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.