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Finding the Fourth Proportional to 478,511.17, 660,360.37 and 274,599.39

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Solution

The fourth proportional to 478,511.17, 660,360.37 and 274,599.39 is: 378,955.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,511.17 : 660,360.37 = 274,599.39 : x
  2. Step 2: Convert to fraction form
    478,511.17/660,360.37 = 274,599.39/x
  3. Step 3: Cross multiply
    478,511.17x = 660,360.37 × 274,599.39
  4. Step 4: Simplify right side
    478,511.17x = 181,334,554,264.25
  5. Step 5: Solve for x
    x = 181,334,554,264.25/478,511.17
  6. Step 6: Final answer
    x = 378,955.74

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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.