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Finding the Fourth Proportional to 668,460.52, 922,477.03 and 381,979.92

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Solution

The fourth proportional to 668,460.52, 922,477.03 and 381,979.92 is: 527,133.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,460.52 : 922,477.03 = 381,979.92 : x
  2. Step 2: Convert to fraction form
    668,460.52/922,477.03 = 381,979.92/x
  3. Step 3: Cross multiply
    668,460.52x = 922,477.03 × 381,979.92
  4. Step 4: Simplify right side
    668,460.52x = 352,367,700,510.96
  5. Step 5: Solve for x
    x = 352,367,700,510.96/668,460.52
  6. Step 6: Final answer
    x = 527,133.15

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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.