Home / 1,188,631.29-1,640,305.80-644,767.32

Finding the Fourth Proportional to 1,188,631.29, 1,640,305.80 and 644,767.32

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Solution

The fourth proportional to 1,188,631.29, 1,640,305.80 and 644,767.32 is: 889,775.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,188,631.29 : 1,640,305.80 = 644,767.32 : x
  2. Step 2: Convert to fraction form
    1,188,631.29/1,640,305.80 = 644,767.32/x
  3. Step 3: Cross multiply
    1,188,631.29x = 1,640,305.80 × 644,767.32
  4. Step 4: Simplify right side
    1,188,631.29x = 1,057,615,574,646.46
  5. Step 5: Solve for x
    x = 1,057,615,574,646.46/1,188,631.29
  6. Step 6: Final answer
    x = 889,775.98

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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.