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Finding the Fourth Proportional to 668,605.68, 922,671.86 and 362,682.65

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Solution

The fourth proportional to 668,605.68, 922,671.86 and 362,682.65 is: 500,499.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,605.68 : 922,671.86 = 362,682.65 : x
  2. Step 2: Convert to fraction form
    668,605.68/922,671.86 = 362,682.65/x
  3. Step 3: Cross multiply
    668,605.68x = 922,671.86 × 362,682.65
  4. Step 4: Simplify right side
    668,605.68x = 334,637,068,838.46
  5. Step 5: Solve for x
    x = 334,637,068,838.46/668,605.68
  6. Step 6: Final answer
    x = 500,499.89

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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.