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Finding the Fourth Proportional to 422,577.40, 582,897.69 and 345,165.52

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Solution

The fourth proportional to 422,577.40, 582,897.69 and 345,165.52 is: 476,116.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    422,577.40 : 582,897.69 = 345,165.52 : x
  2. Step 2: Convert to fraction form
    422,577.40/582,897.69 = 345,165.52/x
  3. Step 3: Cross multiply
    422,577.40x = 582,897.69 × 345,165.52
  4. Step 4: Simplify right side
    422,577.40x = 201,196,184,275.65
  5. Step 5: Solve for x
    x = 201,196,184,275.65/422,577.40
  6. Step 6: Final answer
    x = 476,116.76

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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.