Home / 770,895.20-1,156,342.80-209,928.80

Finding the Fourth Proportional to 770,895.20, 1,156,342.80 and 209,928.80

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Solution

The fourth proportional to 770,895.20, 1,156,342.80 and 209,928.80 is: 314,893.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    770,895.20 : 1,156,342.80 = 209,928.80 : x
  2. Step 2: Convert to fraction form
    770,895.20/1,156,342.80 = 209,928.80/x
  3. Step 3: Cross multiply
    770,895.20x = 1,156,342.80 × 209,928.80
  4. Step 4: Simplify right side
    770,895.20x = 242,749,656,392.64
  5. Step 5: Solve for x
    x = 242,749,656,392.64/770,895.20
  6. Step 6: Final answer
    x = 314,893.20

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Double scale
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Similar ratio
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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.