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Finding the Fourth Proportional to 587,205.38, 810,338.97 and 318,935.30

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Solution

The fourth proportional to 587,205.38, 810,338.97 and 318,935.30 is: 440,128.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    587,205.38 : 810,338.97 = 318,935.30 : x
  2. Step 2: Convert to fraction form
    587,205.38/810,338.97 = 318,935.30/x
  3. Step 3: Cross multiply
    587,205.38x = 810,338.97 × 318,935.30
  4. Step 4: Simplify right side
    587,205.38x = 258,445,702,498.64
  5. Step 5: Solve for x
    x = 258,445,702,498.64/587,205.38
  6. Step 6: Final answer
    x = 440,128.29

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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.