Home / 725,022.39-1,087,555.01-345,983.40

Finding the Fourth Proportional to 725,022.39, 1,087,555.01 and 345,983.40

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Solution

The fourth proportional to 725,022.39, 1,087,555.01 and 345,983.40 is: 518,985.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    725,022.39 : 1,087,555.01 = 345,983.40 : x
  2. Step 2: Convert to fraction form
    725,022.39/1,087,555.01 = 345,983.40/x
  3. Step 3: Cross multiply
    725,022.39x = 1,087,555.01 × 345,983.40
  4. Step 4: Simplify right side
    725,022.39x = 376,275,978,316.92
  5. Step 5: Solve for x
    x = 376,275,978,316.92/725,022.39
  6. Step 6: Final answer
    x = 518,985.32

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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.