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Finding the Fourth Proportional to 505,815.39, 758,069.01 and 378,456.39

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Solution

The fourth proportional to 505,815.39, 758,069.01 and 378,456.39 is: 567,195.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,815.39 : 758,069.01 = 378,456.39 : x
  2. Step 2: Convert to fraction form
    505,815.39/758,069.01 = 378,456.39/x
  3. Step 3: Cross multiply
    505,815.39x = 758,069.01 × 378,456.39
  4. Step 4: Simplify right side
    505,815.39x = 286,896,060,895.47
  5. Step 5: Solve for x
    x = 286,896,060,895.47/505,815.39
  6. Step 6: Final answer
    x = 567,195.20

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1.5x scale

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.