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Finding the Fourth Proportional to 659,617.85, 910,316.66 and 369,255.17

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Solution

The fourth proportional to 659,617.85, 910,316.66 and 369,255.17 is: 509,596.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,617.85 : 910,316.66 = 369,255.17 : x
  2. Step 2: Convert to fraction form
    659,617.85/910,316.66 = 369,255.17/x
  3. Step 3: Cross multiply
    659,617.85x = 910,316.66 × 369,255.17
  4. Step 4: Simplify right side
    659,617.85x = 336,139,133,471.65
  5. Step 5: Solve for x
    x = 336,139,133,471.65/659,617.85
  6. Step 6: Final answer
    x = 509,596.78

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.