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Finding the Fourth Proportional to 508,835.36, 765,805.10 and 383,126.60

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Solution

The fourth proportional to 508,835.36, 765,805.10 and 383,126.60 is: 576,611.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,835.36 : 765,805.10 = 383,126.60 : x
  2. Step 2: Convert to fraction form
    508,835.36/765,805.10 = 383,126.60/x
  3. Step 3: Cross multiply
    508,835.36x = 765,805.10 × 383,126.60
  4. Step 4: Simplify right side
    508,835.36x = 293,400,304,225.66
  5. Step 5: Solve for x
    x = 293,400,304,225.66/508,835.36
  6. Step 6: Final answer
    x = 576,611.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.