Home / 920,373.12-1,380,889.92-359,809.92

Finding the Fourth Proportional to 920,373.12, 1,380,889.92 and 359,809.92

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Solution

The fourth proportional to 920,373.12, 1,380,889.92 and 359,809.92 is: 539,843.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    920,373.12 : 1,380,889.92 = 359,809.92 : x
  2. Step 2: Convert to fraction form
    920,373.12/1,380,889.92 = 359,809.92/x
  3. Step 3: Cross multiply
    920,373.12x = 1,380,889.92 × 359,809.92
  4. Step 4: Simplify right side
    920,373.12x = 496,857,891,644.01
  5. Step 5: Solve for x
    x = 496,857,891,644.01/920,373.12
  6. Step 6: Final answer
    x = 539,843.98

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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.