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Finding the Fourth Proportional to 668,465.06, 922,483.31 and 381,984.47

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Solution

The fourth proportional to 668,465.06, 922,483.31 and 381,984.47 is: 527,139.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,465.06 : 922,483.31 = 381,984.47 : x
  2. Step 2: Convert to fraction form
    668,465.06/922,483.31 = 381,984.47/x
  3. Step 3: Cross multiply
    668,465.06x = 922,483.31 × 381,984.47
  4. Step 4: Simplify right side
    668,465.06x = 352,374,291,731.86
  5. Step 5: Solve for x
    x = 352,374,291,731.86/668,465.06
  6. Step 6: Final answer
    x = 527,139.43

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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.