Home / 642,354.19-963,456.21-258,087.48

Finding the Fourth Proportional to 642,354.19, 963,456.21 and 258,087.48

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Solution

The fourth proportional to 642,354.19, 963,456.21 and 258,087.48 is: 387,101.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,354.19 : 963,456.21 = 258,087.48 : x
  2. Step 2: Convert to fraction form
    642,354.19/963,456.21 = 258,087.48/x
  3. Step 3: Cross multiply
    642,354.19x = 963,456.21 × 258,087.48
  4. Step 4: Simplify right side
    642,354.19x = 248,655,985,329.25
  5. Step 5: Solve for x
    x = 248,655,985,329.25/642,354.19
  6. Step 6: Final answer
    x = 387,101.06

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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.