Home / 705,990.63-1,058,729.59-386,378.71

Finding the Fourth Proportional to 705,990.63, 1,058,729.59 and 386,378.71

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Solution

The fourth proportional to 705,990.63, 1,058,729.59 and 386,378.71 is: 579,427.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    705,990.63 : 1,058,729.59 = 386,378.71 : x
  2. Step 2: Convert to fraction form
    705,990.63/1,058,729.59 = 386,378.71/x
  3. Step 3: Cross multiply
    705,990.63x = 1,058,729.59 × 386,378.71
  4. Step 4: Simplify right side
    705,990.63x = 409,070,568,885.80
  5. Step 5: Solve for x
    x = 409,070,568,885.80/705,990.63
  6. Step 6: Final answer
    x = 579,427.76

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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.