Home / 992,476.75-1,488,715.14-431,511.25

Finding the Fourth Proportional to 992,476.75, 1,488,715.14 and 431,511.25

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Solution

The fourth proportional to 992,476.75, 1,488,715.14 and 431,511.25 is: 647,266.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    992,476.75 : 1,488,715.14 = 431,511.25 : x
  2. Step 2: Convert to fraction form
    992,476.75/1,488,715.14 = 431,511.25/x
  3. Step 3: Cross multiply
    992,476.75x = 1,488,715.14 × 431,511.25
  4. Step 4: Simplify right side
    992,476.75x = 642,397,330,955.33
  5. Step 5: Solve for x
    x = 642,397,330,955.33/992,476.75
  6. Step 6: Final answer
    x = 647,266.88

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1.5x scale

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.