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Finding the Fourth Proportional to 654,625.80, 903,805.56 and 422,156.70

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Solution

The fourth proportional to 654,625.80, 903,805.56 and 422,156.70 is: 582,848.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    654,625.80 : 903,805.56 = 422,156.70 : x
  2. Step 2: Convert to fraction form
    654,625.80/903,805.56 = 422,156.70/x
  3. Step 3: Cross multiply
    654,625.80x = 903,805.56 × 422,156.70
  4. Step 4: Simplify right side
    654,625.80x = 381,547,572,651.25
  5. Step 5: Solve for x
    x = 381,547,572,651.25/654,625.80
  6. Step 6: Final answer
    x = 582,848.36

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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.