Home / 709,788.24-1,063,479.42-428,715

Finding the Fourth Proportional to 709,788.24, 1,063,479.42 and 428,715

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Solution

The fourth proportional to 709,788.24, 1,063,479.42 and 428,715 is: 642,345.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,788.24 : 1,063,479.42 = 428,715 : x
  2. Step 2: Convert to fraction form
    709,788.24/1,063,479.42 = 428,715/x
  3. Step 3: Cross multiply
    709,788.24x = 1,063,479.42 × 428,715
  4. Step 4: Simplify right side
    709,788.24x = 455,929,579,545.30
  5. Step 5: Solve for x
    x = 455,929,579,545.30/709,788.24
  6. Step 6: Final answer
    x = 642,345.92

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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.