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Finding the Fourth Proportional to 579,812.52, 799,905.04 and 388,887.42

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Solution

The fourth proportional to 579,812.52, 799,905.04 and 388,887.42 is: 536,506.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,812.52 : 799,905.04 = 388,887.42 : x
  2. Step 2: Convert to fraction form
    579,812.52/799,905.04 = 388,887.42/x
  3. Step 3: Cross multiply
    579,812.52x = 799,905.04 × 388,887.42
  4. Step 4: Simplify right side
    579,812.52x = 311,073,007,250.60
  5. Step 5: Solve for x
    x = 311,073,007,250.60/579,812.52
  6. Step 6: Final answer
    x = 536,506.19

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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.