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Finding the Fourth Proportional to 505,870.20, 758,805.30 and 476,839.80

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Solution

The fourth proportional to 505,870.20, 758,805.30 and 476,839.80 is: 715,259.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,870.20 : 758,805.30 = 476,839.80 : x
  2. Step 2: Convert to fraction form
    505,870.20/758,805.30 = 476,839.80/x
  3. Step 3: Cross multiply
    505,870.20x = 758,805.30 × 476,839.80
  4. Step 4: Simplify right side
    505,870.20x = 361,828,567,490.94
  5. Step 5: Solve for x
    x = 361,828,567,490.94/505,870.20
  6. Step 6: Final answer
    x = 715,259.70

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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.