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Finding the Fourth Proportional to 575,642.16, 863,754.84 and 388,260

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Solution

The fourth proportional to 575,642.16, 863,754.84 and 388,260 is: 582,586.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    575,642.16 : 863,754.84 = 388,260 : x
  2. Step 2: Convert to fraction form
    575,642.16/863,754.84 = 388,260/x
  3. Step 3: Cross multiply
    575,642.16x = 863,754.84 × 388,260
  4. Step 4: Simplify right side
    575,642.16x = 335,361,454,178.40
  5. Step 5: Solve for x
    x = 335,361,454,178.40/575,642.16
  6. Step 6: Final answer
    x = 582,586.68

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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.