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Finding the Fourth Proportional to 618,584.22, 853,605.81 and 363,886.20

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Solution

The fourth proportional to 618,584.22, 853,605.81 and 363,886.20 is: 502,139.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,584.22 : 853,605.81 = 363,886.20 : x
  2. Step 2: Convert to fraction form
    618,584.22/853,605.81 = 363,886.20/x
  3. Step 3: Cross multiply
    618,584.22x = 853,605.81 × 363,886.20
  4. Step 4: Simplify right side
    618,584.22x = 310,615,374,498.82
  5. Step 5: Solve for x
    x = 310,615,374,498.82/618,584.22
  6. Step 6: Final answer
    x = 502,139.18

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1.5x scale

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.