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Finding the Fourth Proportional to 646,290.50, 891,650.03 and 374,209.88

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Solution

The fourth proportional to 646,290.50, 891,650.03 and 374,209.88 is: 516,275.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,290.50 : 891,650.03 = 374,209.88 : x
  2. Step 2: Convert to fraction form
    646,290.50/891,650.03 = 374,209.88/x
  3. Step 3: Cross multiply
    646,290.50x = 891,650.03 × 374,209.88
  4. Step 4: Simplify right side
    646,290.50x = 333,664,244,399.00
  5. Step 5: Solve for x
    x = 333,664,244,399.00/646,290.50
  6. Step 6: Final answer
    x = 516,275.96

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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.