Home / 1,043,145.80-1,438,127.70-891,809.56

Finding the Fourth Proportional to 1,043,145.80, 1,438,127.70 and 891,809.56

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Solution

The fourth proportional to 1,043,145.80, 1,438,127.70 and 891,809.56 is: 1,229,488.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,043,145.80 : 1,438,127.70 = 891,809.56 : x
  2. Step 2: Convert to fraction form
    1,043,145.80/1,438,127.70 = 891,809.56/x
  3. Step 3: Cross multiply
    1,043,145.80x = 1,438,127.70 × 891,809.56
  4. Step 4: Simplify right side
    1,043,145.80x = 1,282,536,031,360.81
  5. Step 5: Solve for x
    x = 1,282,536,031,360.81/1,043,145.80
  6. Step 6: Final answer
    x = 1,229,488.76

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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.