Home / 1,385,065.78-1,911,487.06-773,338.79

Finding the Fourth Proportional to 1,385,065.78, 1,911,487.06 and 773,338.79

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Solution

The fourth proportional to 1,385,065.78, 1,911,487.06 and 773,338.79 is: 1,067,261.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,385,065.78 : 1,911,487.06 = 773,338.79 : x
  2. Step 2: Convert to fraction form
    1,385,065.78/1,911,487.06 = 773,338.79/x
  3. Step 3: Cross multiply
    1,385,065.78x = 1,911,487.06 × 773,338.79
  4. Step 4: Simplify right side
    1,385,065.78x = 1,478,227,091,476.42
  5. Step 5: Solve for x
    x = 1,478,227,091,476.42/1,385,065.78
  6. Step 6: Final answer
    x = 1,067,261.29

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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.