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Finding the Fourth Proportional to 668,463.71, 922,597.83 and 396,681.50

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Solution

The fourth proportional to 668,463.71, 922,597.83 and 396,681.50 is: 547,490.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,463.71 : 922,597.83 = 396,681.50 : x
  2. Step 2: Convert to fraction form
    668,463.71/922,597.83 = 396,681.50/x
  3. Step 3: Cross multiply
    668,463.71x = 922,597.83 × 396,681.50
  4. Step 4: Simplify right side
    668,463.71x = 365,977,493,407.64
  5. Step 5: Solve for x
    x = 365,977,493,407.64/668,463.71
  6. Step 6: Final answer
    x = 547,490.45

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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.