Home / 1,290,275.88-1,780,626.33-709,543.23

Finding the Fourth Proportional to 1,290,275.88, 1,780,626.33 and 709,543.23

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Solution

The fourth proportional to 1,290,275.88, 1,780,626.33 and 709,543.23 is: 979,194.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,290,275.88 : 1,780,626.33 = 709,543.23 : x
  2. Step 2: Convert to fraction form
    1,290,275.88/1,780,626.33 = 709,543.23/x
  3. Step 3: Cross multiply
    1,290,275.88x = 1,780,626.33 × 709,543.23
  4. Step 4: Simplify right side
    1,290,275.88x = 1,263,431,357,611.25
  5. Step 5: Solve for x
    x = 1,263,431,357,611.25/1,290,275.88
  6. Step 6: Final answer
    x = 979,194.74

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.