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Finding the Fourth Proportional to 606,701.20, 909,965.40 and 207,360.40

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Solution

The fourth proportional to 606,701.20, 909,965.40 and 207,360.40 is: 311,011.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    606,701.20 : 909,965.40 = 207,360.40 : x
  2. Step 2: Convert to fraction form
    606,701.20/909,965.40 = 207,360.40/x
  3. Step 3: Cross multiply
    606,701.20x = 909,965.40 × 207,360.40
  4. Step 4: Simplify right side
    606,701.20x = 188,690,789,330.16
  5. Step 5: Solve for x
    x = 188,690,789,330.16/606,701.20
  6. Step 6: Final answer
    x = 311,011.07

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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.