Home / 770,749.20-1,156,123.80-209,782.80

Finding the Fourth Proportional to 770,749.20, 1,156,123.80 and 209,782.80

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Solution

The fourth proportional to 770,749.20, 1,156,123.80 and 209,782.80 is: 314,674.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    770,749.20 : 1,156,123.80 = 209,782.80 : x
  2. Step 2: Convert to fraction form
    770,749.20/1,156,123.80 = 209,782.80/x
  3. Step 3: Cross multiply
    770,749.20x = 1,156,123.80 × 209,782.80
  4. Step 4: Simplify right side
    770,749.20x = 242,534,887,910.64
  5. Step 5: Solve for x
    x = 242,534,887,910.64/770,749.20
  6. Step 6: Final answer
    x = 314,674.20

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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.