Home / 439,715.15-659,686.43-257,499.83

Finding the Fourth Proportional to 439,715.15, 659,686.43 and 257,499.83

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Solution

The fourth proportional to 439,715.15, 659,686.43 and 257,499.83 is: 386,316.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,715.15 : 659,686.43 = 257,499.83 : x
  2. Step 2: Convert to fraction form
    439,715.15/659,686.43 = 257,499.83/x
  3. Step 3: Cross multiply
    439,715.15x = 659,686.43 × 257,499.83
  4. Step 4: Simplify right side
    439,715.15x = 169,869,145,871.27
  5. Step 5: Solve for x
    x = 169,869,145,871.27/439,715.15
  6. Step 6: Final answer
    x = 386,316.34

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.