Home / 709,977.96-979,777.62-387,691.92

Finding the Fourth Proportional to 709,977.96, 979,777.62 and 387,691.92

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Solution

The fourth proportional to 709,977.96, 979,777.62 and 387,691.92 is: 535,019.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,977.96 : 979,777.62 = 387,691.92 : x
  2. Step 2: Convert to fraction form
    709,977.96/979,777.62 = 387,691.92/x
  3. Step 3: Cross multiply
    709,977.96x = 979,777.62 × 387,691.92
  4. Step 4: Simplify right side
    709,977.96x = 379,851,866,670.83
  5. Step 5: Solve for x
    x = 379,851,866,670.83/709,977.96
  6. Step 6: Final answer
    x = 535,019.24

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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.