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Finding the Fourth Proportional to 668,767.12, 1,001,437.92 and 368,914.40

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Solution

The fourth proportional to 668,767.12, 1,001,437.92 and 368,914.40 is: 552,426.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,767.12 : 1,001,437.92 = 368,914.40 : x
  2. Step 2: Convert to fraction form
    668,767.12/1,001,437.92 = 368,914.40/x
  3. Step 3: Cross multiply
    668,767.12x = 1,001,437.92 × 368,914.40
  4. Step 4: Simplify right side
    668,767.12x = 369,444,869,394.05
  5. Step 5: Solve for x
    x = 369,444,869,394.05/668,767.12
  6. Step 6: Final answer
    x = 552,426.78

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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.