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Finding the Fourth Proportional to 570,767.05, 855,531.54 and 285,770.28

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Solution

The fourth proportional to 570,767.05, 855,531.54 and 285,770.28 is: 428,345.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,767.05 : 855,531.54 = 285,770.28 : x
  2. Step 2: Convert to fraction form
    570,767.05/855,531.54 = 285,770.28/x
  3. Step 3: Cross multiply
    570,767.05x = 855,531.54 × 285,770.28
  4. Step 4: Simplify right side
    570,767.05x = 244,485,490,942.87
  5. Step 5: Solve for x
    x = 244,485,490,942.87/570,767.05
  6. Step 6: Final answer
    x = 428,345.49

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1.5x scale

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.