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Finding the Fourth Proportional to 548,860.78, 757,415.86 and 300,502.23

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Solution

The fourth proportional to 548,860.78, 757,415.86 and 300,502.23 is: 414,686.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    548,860.78 : 757,415.86 = 300,502.23 : x
  2. Step 2: Convert to fraction form
    548,860.78/757,415.86 = 300,502.23/x
  3. Step 3: Cross multiply
    548,860.78x = 757,415.86 × 300,502.23
  4. Step 4: Simplify right side
    548,860.78x = 227,605,154,967.37
  5. Step 5: Solve for x
    x = 227,605,154,967.37/548,860.78
  6. Step 6: Final answer
    x = 414,686.50

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1.5x scale

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.