Home / 709,476.69-979,098.59-387,207.46

Finding the Fourth Proportional to 709,476.69, 979,098.59 and 387,207.46

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Solution

The fourth proportional to 709,476.69, 979,098.59 and 387,207.46 is: 534,357.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,476.69 : 979,098.59 = 387,207.46 : x
  2. Step 2: Convert to fraction form
    709,476.69/979,098.59 = 387,207.46/x
  3. Step 3: Cross multiply
    709,476.69x = 979,098.59 × 387,207.46
  4. Step 4: Simplify right side
    709,476.69x = 379,114,271,291.95
  5. Step 5: Solve for x
    x = 379,114,271,291.95/709,476.69
  6. Step 6: Final answer
    x = 534,357.61

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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.