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Finding the Fourth Proportional to 520,825.02, 780,979.08 and 165,792.90

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Solution

The fourth proportional to 520,825.02, 780,979.08 and 165,792.90 is: 248,607.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,825.02 : 780,979.08 = 165,792.90 : x
  2. Step 2: Convert to fraction form
    520,825.02/780,979.08 = 165,792.90/x
  3. Step 3: Cross multiply
    520,825.02x = 780,979.08 × 165,792.90
  4. Step 4: Simplify right side
    520,825.02x = 129,480,786,512.53
  5. Step 5: Solve for x
    x = 129,480,786,512.53/520,825.02
  6. Step 6: Final answer
    x = 248,607.08

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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.