Home / 709,827.30-979,575.53-387,538.22

Finding the Fourth Proportional to 709,827.30, 979,575.53 and 387,538.22

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Solution

The fourth proportional to 709,827.30, 979,575.53 and 387,538.22 is: 534,810.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,827.30 : 979,575.53 = 387,538.22 : x
  2. Step 2: Convert to fraction form
    709,827.30/979,575.53 = 387,538.22/x
  3. Step 3: Cross multiply
    709,827.30x = 979,575.53 × 387,538.22
  4. Step 4: Simplify right side
    709,827.30x = 379,622,957,763.00
  5. Step 5: Solve for x
    x = 379,622,957,763.00/709,827.30
  6. Step 6: Final answer
    x = 534,810.31

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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.