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Finding the Fourth Proportional to 438,592.73, 605,797.79 and 317,542.28

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Solution

The fourth proportional to 438,592.73, 605,797.79 and 317,542.28 is: 438,599.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,592.73 : 605,797.79 = 317,542.28 : x
  2. Step 2: Convert to fraction form
    438,592.73/605,797.79 = 317,542.28/x
  3. Step 3: Cross multiply
    438,592.73x = 605,797.79 × 317,542.28
  4. Step 4: Simplify right side
    438,592.73x = 192,366,406,838.86
  5. Step 5: Solve for x
    x = 192,366,406,838.86/438,592.73
  6. Step 6: Final answer
    x = 438,599.17

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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.