Home / 1,428,859.67-1,971,851.78-784,339.79

Finding the Fourth Proportional to 1,428,859.67, 1,971,851.78 and 784,339.79

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Solution

The fourth proportional to 1,428,859.67, 1,971,851.78 and 784,339.79 is: 1,082,402.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,428,859.67 : 1,971,851.78 = 784,339.79 : x
  2. Step 2: Convert to fraction form
    1,428,859.67/1,971,851.78 = 784,339.79/x
  3. Step 3: Cross multiply
    1,428,859.67x = 1,971,851.78 × 784,339.79
  4. Step 4: Simplify right side
    1,428,859.67x = 1,546,601,811,036.33
  5. Step 5: Solve for x
    x = 1,546,601,811,036.33/1,428,859.67
  6. Step 6: Final answer
    x = 1,082,402.87

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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.