Home / 655,828.52-983,595.12-428,052.47

Finding the Fourth Proportional to 655,828.52, 983,595.12 and 428,052.47

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Solution

The fourth proportional to 655,828.52, 983,595.12 and 428,052.47 is: 641,982.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    655,828.52 : 983,595.12 = 428,052.47 : x
  2. Step 2: Convert to fraction form
    655,828.52/983,595.12 = 428,052.47/x
  3. Step 3: Cross multiply
    655,828.52x = 983,595.12 × 428,052.47
  4. Step 4: Simplify right side
    655,828.52x = 421,030,320,595.95
  5. Step 5: Solve for x
    x = 421,030,320,595.95/655,828.52
  6. Step 6: Final answer
    x = 641,982.33

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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.