Home / 1,207,781.60-1,666,759.30-663,940.30

Finding the Fourth Proportional to 1,207,781.60, 1,666,759.30 and 663,940.30

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Solution

The fourth proportional to 1,207,781.60, 1,666,759.30 and 663,940.30 is: 916,248.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,207,781.60 : 1,666,759.30 = 663,940.30 : x
  2. Step 2: Convert to fraction form
    1,207,781.60/1,666,759.30 = 663,940.30/x
  3. Step 3: Cross multiply
    1,207,781.60x = 1,666,759.30 × 663,940.30
  4. Step 4: Simplify right side
    1,207,781.60x = 1,106,628,669,669.79
  5. Step 5: Solve for x
    x = 1,106,628,669,669.79/1,207,781.60
  6. Step 6: Final answer
    x = 916,248.99

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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.