Home / 1,278,983.40-1,921,326.30-1,069,031.40

Finding the Fourth Proportional to 1,278,983.40, 1,921,326.30 and 1,069,031.40

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Solution

The fourth proportional to 1,278,983.40, 1,921,326.30 and 1,069,031.40 is: 1,605,930.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,278,983.40 : 1,921,326.30 = 1,069,031.40 : x
  2. Step 2: Convert to fraction form
    1,278,983.40/1,921,326.30 = 1,069,031.40/x
  3. Step 3: Cross multiply
    1,278,983.40x = 1,921,326.30 × 1,069,031.40
  4. Step 4: Simplify right side
    1,278,983.40x = 2,053,958,144,345.82
  5. Step 5: Solve for x
    x = 2,053,958,144,345.82/1,278,983.40
  6. Step 6: Final answer
    x = 1,605,930.26

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.