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Finding the Fourth Proportional to 808,978, 1,116,389.64 and 451,282

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Solution

The fourth proportional to 808,978, 1,116,389.64 and 451,282 is: 622,769.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    808,978 : 1,116,389.64 = 451,282 : x
  2. Step 2: Convert to fraction form
    808,978/1,116,389.64 = 451,282/x
  3. Step 3: Cross multiply
    808,978x = 1,116,389.64 × 451,282
  4. Step 4: Simplify right side
    808,978x = 503,806,549,518.48
  5. Step 5: Solve for x
    x = 503,806,549,518.48/808,978
  6. Step 6: Final answer
    x = 622,769.16

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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.