Home / 642,864.51-964,149.19-383,275.57

Finding the Fourth Proportional to 642,864.51, 964,149.19 and 383,275.57

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Solution

The fourth proportional to 642,864.51, 964,149.19 and 383,275.57 is: 574,825.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,864.51 : 964,149.19 = 383,275.57 : x
  2. Step 2: Convert to fraction form
    642,864.51/964,149.19 = 383,275.57/x
  3. Step 3: Cross multiply
    642,864.51x = 964,149.19 × 383,275.57
  4. Step 4: Simplify right side
    642,864.51x = 369,534,823,625.17
  5. Step 5: Solve for x
    x = 369,534,823,625.17/642,864.51
  6. Step 6: Final answer
    x = 574,825.36

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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.