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Finding the Fourth Proportional to 478,510.97, 660,360.09 and 274,599.19

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Solution

The fourth proportional to 478,510.97, 660,360.09 and 274,599.19 is: 378,955.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,510.97 : 660,360.09 = 274,599.19 : x
  2. Step 2: Convert to fraction form
    478,510.97/660,360.09 = 274,599.19/x
  3. Step 3: Cross multiply
    478,510.97x = 660,360.09 × 274,599.19
  4. Step 4: Simplify right side
    478,510.97x = 181,334,344,171.43
  5. Step 5: Solve for x
    x = 181,334,344,171.43/478,510.97
  6. Step 6: Final answer
    x = 378,955.46

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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.