Home / 1,188,812.80-1,640,534.40-679,484.80

Finding the Fourth Proportional to 1,188,812.80, 1,640,534.40 and 679,484.80

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Solution

The fourth proportional to 1,188,812.80, 1,640,534.40 and 679,484.80 is: 937,673.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,188,812.80 : 1,640,534.40 = 679,484.80 : x
  2. Step 2: Convert to fraction form
    1,188,812.80/1,640,534.40 = 679,484.80/x
  3. Step 3: Cross multiply
    1,188,812.80x = 1,640,534.40 × 679,484.80
  4. Step 4: Simplify right side
    1,188,812.80x = 1,114,718,188,677.12
  5. Step 5: Solve for x
    x = 1,114,718,188,677.12/1,188,812.80
  6. Step 6: Final answer
    x = 937,673.44

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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.