Home / 1,270,153.72-1,752,752.28-689,363.68

Finding the Fourth Proportional to 1,270,153.72, 1,752,752.28 and 689,363.68

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Solution

The fourth proportional to 1,270,153.72, 1,752,752.28 and 689,363.68 is: 951,289.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,270,153.72 : 1,752,752.28 = 689,363.68 : x
  2. Step 2: Convert to fraction form
    1,270,153.72/1,752,752.28 = 689,363.68/x
  3. Step 3: Cross multiply
    1,270,153.72x = 1,752,752.28 × 689,363.68
  4. Step 4: Simplify right side
    1,270,153.72x = 1,208,283,761,869.19
  5. Step 5: Solve for x
    x = 1,208,283,761,869.19/1,270,153.72
  6. Step 6: Final answer
    x = 951,289.39

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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.