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Finding the Fourth Proportional to 478,653.52, 660,533.94 and 274,696.08

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Solution

The fourth proportional to 478,653.52, 660,533.94 and 274,696.08 is: 379,076.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,653.52 : 660,533.94 = 274,696.08 : x
  2. Step 2: Convert to fraction form
    478,653.52/660,533.94 = 274,696.08/x
  3. Step 3: Cross multiply
    478,653.52x = 660,533.94 × 274,696.08
  4. Step 4: Simplify right side
    478,653.52x = 181,446,084,024.96
  5. Step 5: Solve for x
    x = 181,446,084,024.96/478,653.52
  6. Step 6: Final answer
    x = 379,076.05

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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.