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Finding the Fourth Proportional to 620,895.22, 931,348.59 and 247,013.62

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Solution

The fourth proportional to 620,895.22, 931,348.59 and 247,013.62 is: 370,522.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,895.22 : 931,348.59 = 247,013.62 : x
  2. Step 2: Convert to fraction form
    620,895.22/931,348.59 = 247,013.62/x
  3. Step 3: Cross multiply
    620,895.22x = 931,348.59 × 247,013.62
  4. Step 4: Simplify right side
    620,895.22x = 230,055,786,697.80
  5. Step 5: Solve for x
    x = 230,055,786,697.80/620,895.22
  6. Step 6: Final answer
    x = 370,522.72

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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.