Home / 709,899.06-979,653.27-387,608.16

Finding the Fourth Proportional to 709,899.06, 979,653.27 and 387,608.16

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Solution

The fourth proportional to 709,899.06, 979,653.27 and 387,608.16 is: 534,895.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,899.06 : 979,653.27 = 387,608.16 : x
  2. Step 2: Convert to fraction form
    709,899.06/979,653.27 = 387,608.16/x
  3. Step 3: Cross multiply
    709,899.06x = 979,653.27 × 387,608.16
  4. Step 4: Simplify right side
    709,899.06x = 379,721,601,422.68
  5. Step 5: Solve for x
    x = 379,721,601,422.68/709,899.06
  6. Step 6: Final answer
    x = 534,895.20

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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.