Home / 1,290,370.52-1,780,740.22-709,556.84

Finding the Fourth Proportional to 1,290,370.52, 1,780,740.22 and 709,556.84

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Solution

The fourth proportional to 1,290,370.52, 1,780,740.22 and 709,556.84 is: 979,204.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,290,370.52 : 1,780,740.22 = 709,556.84 : x
  2. Step 2: Convert to fraction form
    1,290,370.52/1,780,740.22 = 709,556.84/x
  3. Step 3: Cross multiply
    1,290,370.52x = 1,780,740.22 × 709,556.84
  4. Step 4: Simplify right side
    1,290,370.52x = 1,263,536,392,686.51
  5. Step 5: Solve for x
    x = 1,263,536,392,686.51/1,290,370.52
  6. Step 6: Final answer
    x = 979,204.32

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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.