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Finding the Fourth Proportional to 909,881.86, 1,255,593.14 and 496,394.02

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Solution

The fourth proportional to 909,881.86, 1,255,593.14 and 496,394.02 is: 684,999.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    909,881.86 : 1,255,593.14 = 496,394.02 : x
  2. Step 2: Convert to fraction form
    909,881.86/1,255,593.14 = 496,394.02/x
  3. Step 3: Cross multiply
    909,881.86x = 1,255,593.14 × 496,394.02
  4. Step 4: Simplify right side
    909,881.86x = 623,268,917,489.09
  5. Step 5: Solve for x
    x = 623,268,917,489.09/909,881.86
  6. Step 6: Final answer
    x = 684,999.83

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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.