Home / 422,895.78-583,622.82-279,404.28

Finding the Fourth Proportional to 422,895.78, 583,622.82 and 279,404.28

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Solution

The fourth proportional to 422,895.78, 583,622.82 and 279,404.28 is: 385,595.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    422,895.78 : 583,622.82 = 279,404.28 : x
  2. Step 2: Convert to fraction form
    422,895.78/583,622.82 = 279,404.28/x
  3. Step 3: Cross multiply
    422,895.78x = 583,622.82 × 279,404.28
  4. Step 4: Simplify right side
    422,895.78x = 163,066,713,813.67
  5. Step 5: Solve for x
    x = 163,066,713,813.67/422,895.78
  6. Step 6: Final answer
    x = 385,595.51

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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.