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Finding the Fourth Proportional to 501,220.91, 691,621.13 and 286,374.89

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Solution

The fourth proportional to 501,220.91, 691,621.13 and 286,374.89 is: 395,160.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    501,220.91 : 691,621.13 = 286,374.89 : x
  2. Step 2: Convert to fraction form
    501,220.91/691,621.13 = 286,374.89/x
  3. Step 3: Cross multiply
    501,220.91x = 691,621.13 × 286,374.89
  4. Step 4: Simplify right side
    501,220.91x = 198,062,927,470.42
  5. Step 5: Solve for x
    x = 198,062,927,470.42/501,220.91
  6. Step 6: Final answer
    x = 395,160.94

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.