Home / 642,792.11-964,310.00-258,570.36

Finding the Fourth Proportional to 642,792.11, 964,310.00 and 258,570.36

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Solution

The fourth proportional to 642,792.11, 964,310.00 and 258,570.36 is: 387,904.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,792.11 : 964,310.00 = 258,570.36 : x
  2. Step 2: Convert to fraction form
    642,792.11/964,310.00 = 258,570.36/x
  3. Step 3: Cross multiply
    642,792.11x = 964,310.00 × 258,570.36
  4. Step 4: Simplify right side
    642,792.11x = 249,341,982,558.75
  5. Step 5: Solve for x
    x = 249,341,982,558.75/642,792.11
  6. Step 6: Final answer
    x = 387,904.55

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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.