Home / 439,345.08-659,021.13-287,670.06

Finding the Fourth Proportional to 439,345.08, 659,021.13 and 287,670.06

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Solution

The fourth proportional to 439,345.08, 659,021.13 and 287,670.06 is: 431,507.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,345.08 : 659,021.13 = 287,670.06 : x
  2. Step 2: Convert to fraction form
    439,345.08/659,021.13 = 287,670.06/x
  3. Step 3: Cross multiply
    439,345.08x = 659,021.13 × 287,670.06
  4. Step 4: Simplify right side
    439,345.08x = 189,580,648,008.37
  5. Step 5: Solve for x
    x = 189,580,648,008.37/439,345.08
  6. Step 6: Final answer
    x = 431,507.39

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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.