Home / 1,276,242.98-1,913,205.78-636,742.31

Finding the Fourth Proportional to 1,276,242.98, 1,913,205.78 and 636,742.31

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Solution

The fourth proportional to 1,276,242.98, 1,913,205.78 and 636,742.31 is: 954,535.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,276,242.98 : 1,913,205.78 = 636,742.31 : x
  2. Step 2: Convert to fraction form
    1,276,242.98/1,913,205.78 = 636,742.31/x
  3. Step 3: Cross multiply
    1,276,242.98x = 1,913,205.78 × 636,742.31
  4. Step 4: Simplify right side
    1,276,242.98x = 1,218,219,058,296.52
  5. Step 5: Solve for x
    x = 1,218,219,058,296.52/1,276,242.98
  6. Step 6: Final answer
    x = 954,535.37

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.