Home / 1,290,231.08-1,780,564.55-709,498.52

Finding the Fourth Proportional to 1,290,231.08, 1,780,564.55 and 709,498.52

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Solution

The fourth proportional to 1,290,231.08, 1,780,564.55 and 709,498.52 is: 979,133.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,290,231.08 : 1,780,564.55 = 709,498.52 : x
  2. Step 2: Convert to fraction form
    1,290,231.08/1,780,564.55 = 709,498.52/x
  3. Step 3: Cross multiply
    1,290,231.08x = 1,780,564.55 × 709,498.52
  4. Step 4: Simplify right side
    1,290,231.08x = 1,263,307,912,989.47
  5. Step 5: Solve for x
    x = 1,263,307,912,989.47/1,290,231.08
  6. Step 6: Final answer
    x = 979,133.07

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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.