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Finding the Fourth Proportional to 550,659.20, 760,176.72 and 369,304.80

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Solution

The fourth proportional to 550,659.20, 760,176.72 and 369,304.80 is: 509,819.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    550,659.20 : 760,176.72 = 369,304.80 : x
  2. Step 2: Convert to fraction form
    550,659.20/760,176.72 = 369,304.80/x
  3. Step 3: Cross multiply
    550,659.20x = 760,176.72 × 369,304.80
  4. Step 4: Simplify right side
    550,659.20x = 280,736,911,544.26
  5. Step 5: Solve for x
    x = 280,736,911,544.26/550,659.20
  6. Step 6: Final answer
    x = 509,819.71

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1.5x scale

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.