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Finding the Fourth Proportional to 622,378.80, 931,212.72 and 369,794.88

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Solution

The fourth proportional to 622,378.80, 931,212.72 and 369,794.88 is: 553,292.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    622,378.80 : 931,212.72 = 369,794.88 : x
  2. Step 2: Convert to fraction form
    622,378.80/931,212.72 = 369,794.88/x
  3. Step 3: Cross multiply
    622,378.80x = 931,212.72 × 369,794.88
  4. Step 4: Simplify right side
    622,378.80x = 344,357,696,046.87
  5. Step 5: Solve for x
    x = 344,357,696,046.87/622,378.80
  6. Step 6: Final answer
    x = 553,292.78

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1.5x scale

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.