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Finding the Fourth Proportional to 478,695.83, 660,415.07 and 274,673.03

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Solution

The fourth proportional to 478,695.83, 660,415.07 and 274,673.03 is: 378,942.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,695.83 : 660,415.07 = 274,673.03 : x
  2. Step 2: Convert to fraction form
    478,695.83/660,415.07 = 274,673.03/x
  3. Step 3: Cross multiply
    478,695.83x = 660,415.07 × 274,673.03
  4. Step 4: Simplify right side
    478,695.83x = 181,398,205,719.17
  5. Step 5: Solve for x
    x = 181,398,205,719.17/478,695.83
  6. Step 6: Final answer
    x = 378,942.53

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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.