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Finding the Fourth Proportional to 500,084.78, 690,117.83 and 270,642.27

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Solution

The fourth proportional to 500,084.78, 690,117.83 and 270,642.27 is: 373,486.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,084.78 : 690,117.83 = 270,642.27 : x
  2. Step 2: Convert to fraction form
    500,084.78/690,117.83 = 270,642.27/x
  3. Step 3: Cross multiply
    500,084.78x = 690,117.83 × 270,642.27
  4. Step 4: Simplify right side
    500,084.78x = 186,775,053,152.43
  5. Step 5: Solve for x
    x = 186,775,053,152.43/500,084.78
  6. Step 6: Final answer
    x = 373,486.78

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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.