Home / 709,936.56-979,707.33-387,646.38

Finding the Fourth Proportional to 709,936.56, 979,707.33 and 387,646.38

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Solution

The fourth proportional to 709,936.56, 979,707.33 and 387,646.38 is: 534,949.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,936.56 : 979,707.33 = 387,646.38 : x
  2. Step 2: Convert to fraction form
    709,936.56/979,707.33 = 387,646.38/x
  3. Step 3: Cross multiply
    709,936.56x = 979,707.33 × 387,646.38
  4. Step 4: Simplify right side
    709,936.56x = 379,779,999,933.97
  5. Step 5: Solve for x
    x = 379,779,999,933.97/709,936.56
  6. Step 6: Final answer
    x = 534,949.21

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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.