Home / 1,290,426.22-1,780,695.75-709,690.24

Finding the Fourth Proportional to 1,290,426.22, 1,780,695.75 and 709,690.24

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Solution

The fourth proportional to 1,290,426.22, 1,780,695.75 and 709,690.24 is: 979,321.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,290,426.22 : 1,780,695.75 = 709,690.24 : x
  2. Step 2: Convert to fraction form
    1,290,426.22/1,780,695.75 = 709,690.24/x
  3. Step 3: Cross multiply
    1,290,426.22x = 1,780,695.75 × 709,690.24
  4. Step 4: Simplify right side
    1,290,426.22x = 1,263,742,399,071.69
  5. Step 5: Solve for x
    x = 1,263,742,399,071.69/1,290,426.22
  6. Step 6: Final answer
    x = 979,321.70

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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.