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Finding the Fourth Proportional to 668,756.76, 1,002,362.63 and 308,173.65

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Solution

The fourth proportional to 668,756.76, 1,002,362.63 and 308,173.65 is: 461,904.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,756.76 : 1,002,362.63 = 308,173.65 : x
  2. Step 2: Convert to fraction form
    668,756.76/1,002,362.63 = 308,173.65/x
  3. Step 3: Cross multiply
    668,756.76x = 1,002,362.63 × 308,173.65
  4. Step 4: Simplify right side
    668,756.76x = 308,901,748,769.83
  5. Step 5: Solve for x
    x = 308,901,748,769.83/668,756.76
  6. Step 6: Final answer
    x = 461,904.49

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.