Home / 1,290,214.26-1,780,556.45-717,264

Finding the Fourth Proportional to 1,290,214.26, 1,780,556.45 and 717,264

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Solution

The fourth proportional to 1,290,214.26, 1,780,556.45 and 717,264 is: 989,858.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,290,214.26 : 1,780,556.45 = 717,264 : x
  2. Step 2: Convert to fraction form
    1,290,214.26/1,780,556.45 = 717,264/x
  3. Step 3: Cross multiply
    1,290,214.26x = 1,780,556.45 × 717,264
  4. Step 4: Simplify right side
    1,290,214.26x = 1,277,129,037,966.48
  5. Step 5: Solve for x
    x = 1,277,129,037,966.48/1,290,214.26
  6. Step 6: Final answer
    x = 989,858.10

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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.