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Finding the Fourth Proportional to 523,571.20, 722,522.88 and 285,107.20

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Solution

The fourth proportional to 523,571.20, 722,522.88 and 285,107.20 is: 393,445.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    523,571.20 : 722,522.88 = 285,107.20 : x
  2. Step 2: Convert to fraction form
    523,571.20/722,522.88 = 285,107.20/x
  3. Step 3: Cross multiply
    523,571.20x = 722,522.88 × 285,107.20
  4. Step 4: Simplify right side
    523,571.20x = 205,996,475,252.74
  5. Step 5: Solve for x
    x = 205,996,475,252.74/523,571.20
  6. Step 6: Final answer
    x = 393,445.01

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.