Home / 2,153,930.56-2,971,805.76-1,390,418.56

Finding the Fourth Proportional to 2,153,930.56, 2,971,805.76 and 1,390,418.56

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Solution

The fourth proportional to 2,153,930.56, 2,971,805.76 and 1,390,418.56 is: 1,918,378.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,153,930.56 : 2,971,805.76 = 1,390,418.56 : x
  2. Step 2: Convert to fraction form
    2,153,930.56/2,971,805.76 = 1,390,418.56/x
  3. Step 3: Cross multiply
    2,153,930.56x = 2,971,805.76 × 1,390,418.56
  4. Step 4: Simplify right side
    2,153,930.56x = 4,132,053,885,418.91
  5. Step 5: Solve for x
    x = 4,132,053,885,418.91/2,153,930.56
  6. Step 6: Final answer
    x = 1,918,378.41

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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.