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Finding the Fourth Proportional to 606,705.70, 909,972.15 and 207,364.90

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Solution

The fourth proportional to 606,705.70, 909,972.15 and 207,364.90 is: 311,017.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    606,705.70 : 909,972.15 = 207,364.90 : x
  2. Step 2: Convert to fraction form
    606,705.70/909,972.15 = 207,364.90/x
  3. Step 3: Cross multiply
    606,705.70x = 909,972.15 × 207,364.90
  4. Step 4: Simplify right side
    606,705.70x = 188,696,283,887.54
  5. Step 5: Solve for x
    x = 188,696,283,887.54/606,705.70
  6. Step 6: Final answer
    x = 311,017.82

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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.