Home / 1,278,431.51-1,917,148.91-479,277

Finding the Fourth Proportional to 1,278,431.51, 1,917,148.91 and 479,277

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Solution

The fourth proportional to 1,278,431.51, 1,917,148.91 and 479,277 is: 718,728.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,278,431.51 : 1,917,148.91 = 479,277 : x
  2. Step 2: Convert to fraction form
    1,278,431.51/1,917,148.91 = 479,277/x
  3. Step 3: Cross multiply
    1,278,431.51x = 1,917,148.91 × 479,277
  4. Step 4: Simplify right side
    1,278,431.51x = 918,845,375,741.69
  5. Step 5: Solve for x
    x = 918,845,375,741.69/1,278,431.51
  6. Step 6: Final answer
    x = 718,728.67

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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.