Home / 765,519.68-1,148,396.16-391,416.32

Finding the Fourth Proportional to 765,519.68, 1,148,396.16 and 391,416.32

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Solution

The fourth proportional to 765,519.68, 1,148,396.16 and 391,416.32 is: 587,184.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    765,519.68 : 1,148,396.16 = 391,416.32 : x
  2. Step 2: Convert to fraction form
    765,519.68/1,148,396.16 = 391,416.32/x
  3. Step 3: Cross multiply
    765,519.68x = 1,148,396.16 × 391,416.32
  4. Step 4: Simplify right side
    765,519.68x = 449,500,998,849.33
  5. Step 5: Solve for x
    x = 449,500,998,849.33/765,519.68
  6. Step 6: Final answer
    x = 587,184.12

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1.5x scale

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.