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Finding the Fourth Proportional to 665,620.84, 918,557.22 and 363,814.84

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Solution

The fourth proportional to 665,620.84, 918,557.22 and 363,814.84 is: 502,064.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,620.84 : 918,557.22 = 363,814.84 : x
  2. Step 2: Convert to fraction form
    665,620.84/918,557.22 = 363,814.84/x
  3. Step 3: Cross multiply
    665,620.84x = 918,557.22 × 363,814.84
  4. Step 4: Simplify right side
    665,620.84x = 334,184,748,025.15
  5. Step 5: Solve for x
    x = 334,184,748,025.15/665,620.84
  6. Step 6: Final answer
    x = 502,064.73

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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.