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Finding the Fourth Proportional to 478,868.62, 660,838.62 and 274,932.64

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Solution

The fourth proportional to 478,868.62, 660,838.62 and 274,932.64 is: 379,407.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,868.62 : 660,838.62 = 274,932.64 : x
  2. Step 2: Convert to fraction form
    478,868.62/660,838.62 = 274,932.64/x
  3. Step 3: Cross multiply
    478,868.62x = 660,838.62 × 274,932.64
  4. Step 4: Simplify right side
    478,868.62x = 181,686,106,410.56
  5. Step 5: Solve for x
    x = 181,686,106,410.56/478,868.62
  6. Step 6: Final answer
    x = 379,407.00

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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.