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Finding the Fourth Proportional to 553,577.15, 763,843.96 and 308,508.38

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Solution

The fourth proportional to 553,577.15, 763,843.96 and 308,508.38 is: 425,690.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,577.15 : 763,843.96 = 308,508.38 : x
  2. Step 2: Convert to fraction form
    553,577.15/763,843.96 = 308,508.38/x
  3. Step 3: Cross multiply
    553,577.15x = 763,843.96 × 308,508.38
  4. Step 4: Simplify right side
    553,577.15x = 235,652,264,664.48
  5. Step 5: Solve for x
    x = 235,652,264,664.48/553,577.15
  6. Step 6: Final answer
    x = 425,690.02

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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.