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Finding the Fourth Proportional to 490,897.47, 677,442.54 and 276,035.64

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Solution

The fourth proportional to 490,897.47, 677,442.54 and 276,035.64 is: 380,931.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,897.47 : 677,442.54 = 276,035.64 : x
  2. Step 2: Convert to fraction form
    490,897.47/677,442.54 = 276,035.64/x
  3. Step 3: Cross multiply
    490,897.47x = 677,442.54 × 276,035.64
  4. Step 4: Simplify right side
    490,897.47x = 186,998,285,092.13
  5. Step 5: Solve for x
    x = 186,998,285,092.13/490,897.47
  6. Step 6: Final answer
    x = 380,931.45

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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.