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Finding the Fourth Proportional to 587,145.09, 810,246.49 and 345,443.21

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Solution

The fourth proportional to 587,145.09, 810,246.49 and 345,443.21 is: 476,703.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    587,145.09 : 810,246.49 = 345,443.21 : x
  2. Step 2: Convert to fraction form
    587,145.09/810,246.49 = 345,443.21/x
  3. Step 3: Cross multiply
    587,145.09x = 810,246.49 × 345,443.21
  4. Step 4: Simplify right side
    587,145.09x = 279,894,148,396.83
  5. Step 5: Solve for x
    x = 279,894,148,396.83/587,145.09
  6. Step 6: Final answer
    x = 476,703.55

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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.