Home / 1,207,721.64-1,666,637.17-663,845.75

Finding the Fourth Proportional to 1,207,721.64, 1,666,637.17 and 663,845.75

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Solution

The fourth proportional to 1,207,721.64, 1,666,637.17 and 663,845.75 is: 916,096.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,207,721.64 : 1,666,637.17 = 663,845.75 : x
  2. Step 2: Convert to fraction form
    1,207,721.64/1,666,637.17 = 663,845.75/x
  3. Step 3: Cross multiply
    1,207,721.64x = 1,666,637.17 × 663,845.75
  4. Step 4: Simplify right side
    1,207,721.64x = 1,106,390,003,041.03
  5. Step 5: Solve for x
    x = 1,106,390,003,041.03/1,207,721.64
  6. Step 6: Final answer
    x = 916,096.86

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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.