Home / 1,321,073.40-1,980,224.82-646,223.16

Finding the Fourth Proportional to 1,321,073.40, 1,980,224.82 and 646,223.16

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Solution

The fourth proportional to 1,321,073.40, 1,980,224.82 and 646,223.16 is: 968,657.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,321,073.40 : 1,980,224.82 = 646,223.16 : x
  2. Step 2: Convert to fraction form
    1,321,073.40/1,980,224.82 = 646,223.16/x
  3. Step 3: Cross multiply
    1,321,073.40x = 1,980,224.82 × 646,223.16
  4. Step 4: Simplify right side
    1,321,073.40x = 1,279,667,140,690.83
  5. Step 5: Solve for x
    x = 1,279,667,140,690.83/1,321,073.40
  6. Step 6: Final answer
    x = 968,657.11

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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.