Home / 821,153.60-1,230,808.80-347,758.40

Finding the Fourth Proportional to 821,153.60, 1,230,808.80 and 347,758.40

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Solution

The fourth proportional to 821,153.60, 1,230,808.80 and 347,758.40 is: 521,247.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    821,153.60 : 1,230,808.80 = 347,758.40 : x
  2. Step 2: Convert to fraction form
    821,153.60/1,230,808.80 = 347,758.40/x
  3. Step 3: Cross multiply
    821,153.60x = 1,230,808.80 × 347,758.40
  4. Step 4: Simplify right side
    821,153.60x = 428,024,098,993.92
  5. Step 5: Solve for x
    x = 428,024,098,993.92/821,153.60
  6. Step 6: Final answer
    x = 521,247.30

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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.