Home / 1,105,145.64-1,525,098.54-621,711

Finding the Fourth Proportional to 1,105,145.64, 1,525,098.54 and 621,711

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Solution

The fourth proportional to 1,105,145.64, 1,525,098.54 and 621,711 is: 857,959.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,105,145.64 : 1,525,098.54 = 621,711 : x
  2. Step 2: Convert to fraction form
    1,105,145.64/1,525,098.54 = 621,711/x
  3. Step 3: Cross multiply
    1,105,145.64x = 1,525,098.54 × 621,711
  4. Step 4: Simplify right side
    1,105,145.64x = 948,170,538,401.94
  5. Step 5: Solve for x
    x = 948,170,538,401.94/1,105,145.64
  6. Step 6: Final answer
    x = 857,959.81

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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.