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Finding the Fourth Proportional to 660,634.40, 990,951.60 and 187,313.60

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Solution

The fourth proportional to 660,634.40, 990,951.60 and 187,313.60 is: 280,970.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,634.40 : 990,951.60 = 187,313.60 : x
  2. Step 2: Convert to fraction form
    660,634.40/990,951.60 = 187,313.60/x
  3. Step 3: Cross multiply
    660,634.40x = 990,951.60 × 187,313.60
  4. Step 4: Simplify right side
    660,634.40x = 185,618,711,621.76
  5. Step 5: Solve for x
    x = 185,618,711,621.76/660,634.40
  6. Step 6: Final answer
    x = 280,970.40

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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.