Home / 725,811.20-1,087,404.60-445,000.40

Finding the Fourth Proportional to 725,811.20, 1,087,404.60 and 445,000.40

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Solution

The fourth proportional to 725,811.20, 1,087,404.60 and 445,000.40 is: 666,696.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    725,811.20 : 1,087,404.60 = 445,000.40 : x
  2. Step 2: Convert to fraction form
    725,811.20/1,087,404.60 = 445,000.40/x
  3. Step 3: Cross multiply
    725,811.20x = 1,087,404.60 × 445,000.40
  4. Step 4: Simplify right side
    725,811.20x = 483,895,481,961.84
  5. Step 5: Solve for x
    x = 483,895,481,961.84/725,811.20
  6. Step 6: Final answer
    x = 666,696.08

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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.