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Finding the Fourth Proportional to 613,838.68, 920,755.98 and 276,484.44

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Solution

The fourth proportional to 613,838.68, 920,755.98 and 276,484.44 is: 414,725.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,838.68 : 920,755.98 = 276,484.44 : x
  2. Step 2: Convert to fraction form
    613,838.68/920,755.98 = 276,484.44/x
  3. Step 3: Cross multiply
    613,838.68x = 920,755.98 × 276,484.44
  4. Step 4: Simplify right side
    613,838.68x = 254,574,701,506.95
  5. Step 5: Solve for x
    x = 254,574,701,506.95/613,838.68
  6. Step 6: Final answer
    x = 414,725.74

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.