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Finding the Fourth Proportional to 659,660.85, 910,255.16 and 369,288.30

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Solution

The fourth proportional to 659,660.85, 910,255.16 and 369,288.30 is: 509,574.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,660.85 : 910,255.16 = 369,288.30 : x
  2. Step 2: Convert to fraction form
    659,660.85/910,255.16 = 369,288.30/x
  3. Step 3: Cross multiply
    659,660.85x = 910,255.16 × 369,288.30
  4. Step 4: Simplify right side
    659,660.85x = 336,146,578,756.19
  5. Step 5: Solve for x
    x = 336,146,578,756.19/659,660.85
  6. Step 6: Final answer
    x = 509,574.85

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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.