Home / 479,239.12-661,231.11-315,877.51

Finding the Fourth Proportional to 479,239.12, 661,231.11 and 315,877.51

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Solution

The fourth proportional to 479,239.12, 661,231.11 and 315,877.51 is: 435,832.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,239.12 : 661,231.11 = 315,877.51 : x
  2. Step 2: Convert to fraction form
    479,239.12/661,231.11 = 315,877.51/x
  3. Step 3: Cross multiply
    479,239.12x = 661,231.11 × 315,877.51
  4. Step 4: Simplify right side
    479,239.12x = 208,868,036,561.34
  5. Step 5: Solve for x
    x = 208,868,036,561.34/479,239.12
  6. Step 6: Final answer
    x = 435,832.61

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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.