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Finding the Fourth Proportional to 668,989.96, 923,206.75 and 363,066.39

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Solution

The fourth proportional to 668,989.96, 923,206.75 and 363,066.39 is: 501,031.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,989.96 : 923,206.75 = 363,066.39 : x
  2. Step 2: Convert to fraction form
    668,989.96/923,206.75 = 363,066.39/x
  3. Step 3: Cross multiply
    668,989.96x = 923,206.75 × 363,066.39
  4. Step 4: Simplify right side
    668,989.96x = 335,185,341,038.47
  5. Step 5: Solve for x
    x = 335,185,341,038.47/668,989.96
  6. Step 6: Final answer
    x = 501,031.95

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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.