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Finding the Fourth Proportional to 660,630.60, 990,983.57 and 187,278.75

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Solution

The fourth proportional to 660,630.60, 990,983.57 and 187,278.75 is: 280,928.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,630.60 : 990,983.57 = 187,278.75 : x
  2. Step 2: Convert to fraction form
    660,630.60/990,983.57 = 187,278.75/x
  3. Step 3: Cross multiply
    660,630.60x = 990,983.57 × 187,278.75
  4. Step 4: Simplify right side
    660,630.60x = 185,590,163,323.74
  5. Step 5: Solve for x
    x = 185,590,163,323.74/660,630.60
  6. Step 6: Final answer
    x = 280,928.80

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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.