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Finding the Fourth Proportional to 666,107.82, 999,412.62 and 400,053.81

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Solution

The fourth proportional to 666,107.82, 999,412.62 and 400,053.81 is: 600,231.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,107.82 : 999,412.62 = 400,053.81 : x
  2. Step 2: Convert to fraction form
    666,107.82/999,412.62 = 400,053.81/x
  3. Step 3: Cross multiply
    666,107.82x = 999,412.62 × 400,053.81
  4. Step 4: Simplify right side
    666,107.82x = 399,818,826,393.08
  5. Step 5: Solve for x
    x = 399,818,826,393.08/666,107.82
  6. Step 6: Final answer
    x = 600,231.40

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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.