Home / 1,262,780.34-1,742,615.01-689,805.78

Finding the Fourth Proportional to 1,262,780.34, 1,742,615.01 and 689,805.78

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Solution

The fourth proportional to 1,262,780.34, 1,742,615.01 and 689,805.78 is: 951,920.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,262,780.34 : 1,742,615.01 = 689,805.78 : x
  2. Step 2: Convert to fraction form
    1,262,780.34/1,742,615.01 = 689,805.78/x
  3. Step 3: Cross multiply
    1,262,780.34x = 1,742,615.01 × 689,805.78
  4. Step 4: Simplify right side
    1,262,780.34x = 1,202,065,906,212.76
  5. Step 5: Solve for x
    x = 1,202,065,906,212.76/1,262,780.34
  6. Step 6: Final answer
    x = 951,920.04

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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.