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Finding the Fourth Proportional to 660,625.01, 990,958.07 and 314,332.61

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Solution

The fourth proportional to 660,625.01, 990,958.07 and 314,332.61 is: 471,508.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,625.01 : 990,958.07 = 314,332.61 : x
  2. Step 2: Convert to fraction form
    660,625.01/990,958.07 = 314,332.61/x
  3. Step 3: Cross multiply
    660,625.01x = 990,958.07 × 314,332.61
  4. Step 4: Simplify right side
    660,625.01x = 311,490,430,017.21
  5. Step 5: Solve for x
    x = 311,490,430,017.21/660,625.01
  6. Step 6: Final answer
    x = 471,508.69

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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.