Home / 823,810.20-1,235,715.30-291,931.80

Finding the Fourth Proportional to 823,810.20, 1,235,715.30 and 291,931.80

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Solution

The fourth proportional to 823,810.20, 1,235,715.30 and 291,931.80 is: 437,897.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    823,810.20 : 1,235,715.30 = 291,931.80 : x
  2. Step 2: Convert to fraction form
    823,810.20/1,235,715.30 = 291,931.80/x
  3. Step 3: Cross multiply
    823,810.20x = 1,235,715.30 × 291,931.80
  4. Step 4: Simplify right side
    823,810.20x = 360,744,591,816.54
  5. Step 5: Solve for x
    x = 360,744,591,816.54/823,810.20
  6. Step 6: Final answer
    x = 437,897.70

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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.