Home / 865,225.80-1,297,821.61-258,425.07

Finding the Fourth Proportional to 865,225.80, 1,297,821.61 and 258,425.07

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Solution

The fourth proportional to 865,225.80, 1,297,821.61 and 258,425.07 is: 387,632.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    865,225.80 : 1,297,821.61 = 258,425.07 : x
  2. Step 2: Convert to fraction form
    865,225.80/1,297,821.61 = 258,425.07/x
  3. Step 3: Cross multiply
    865,225.80x = 1,297,821.61 × 258,425.07
  4. Step 4: Simplify right side
    865,225.80x = 335,389,642,069.97
  5. Step 5: Solve for x
    x = 335,389,642,069.97/865,225.80
  6. Step 6: Final answer
    x = 387,632.50

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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.