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Finding the Fourth Proportional to 501,347.44, 691,860.61 and 286,487

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Solution

The fourth proportional to 501,347.44, 691,860.61 and 286,487 is: 395,352.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    501,347.44 : 691,860.61 = 286,487 : x
  2. Step 2: Convert to fraction form
    501,347.44/691,860.61 = 286,487/x
  3. Step 3: Cross multiply
    501,347.44x = 691,860.61 × 286,487
  4. Step 4: Simplify right side
    501,347.44x = 198,209,070,577.07
  5. Step 5: Solve for x
    x = 198,209,070,577.07/501,347.44
  6. Step 6: Final answer
    x = 395,352.71

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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.