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Finding the Fourth Proportional to 583,422.80, 872,801.40 and 505,403.60

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Solution

The fourth proportional to 583,422.80, 872,801.40 and 505,403.60 is: 756,084.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    583,422.80 : 872,801.40 = 505,403.60 : x
  2. Step 2: Convert to fraction form
    583,422.80/872,801.40 = 505,403.60/x
  3. Step 3: Cross multiply
    583,422.80x = 872,801.40 × 505,403.60
  4. Step 4: Simplify right side
    583,422.80x = 441,116,969,645.04
  5. Step 5: Solve for x
    x = 441,116,969,645.04/583,422.80
  6. Step 6: Final answer
    x = 756,084.56

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.