Home / 709,445.99-979,056.11-387,176.86

Finding the Fourth Proportional to 709,445.99, 979,056.11 and 387,176.86

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Solution

The fourth proportional to 709,445.99, 979,056.11 and 387,176.86 is: 534,315.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,445.99 : 979,056.11 = 387,176.86 : x
  2. Step 2: Convert to fraction form
    709,445.99/979,056.11 = 387,176.86/x
  3. Step 3: Cross multiply
    709,445.99x = 979,056.11 × 387,176.86
  4. Step 4: Simplify right side
    709,445.99x = 379,067,872,625.38
  5. Step 5: Solve for x
    x = 379,067,872,625.38/709,445.99
  6. Step 6: Final answer
    x = 534,315.33

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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.