Home / 1,221,505.84-1,685,680.03-677,641.65

Finding the Fourth Proportional to 1,221,505.84, 1,685,680.03 and 677,641.65

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Solution

The fourth proportional to 1,221,505.84, 1,685,680.03 and 677,641.65 is: 935,146.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,221,505.84 : 1,685,680.03 = 677,641.65 : x
  2. Step 2: Convert to fraction form
    1,221,505.84/1,685,680.03 = 677,641.65/x
  3. Step 3: Cross multiply
    1,221,505.84x = 1,685,680.03 × 677,641.65
  4. Step 4: Simplify right side
    1,221,505.84x = 1,142,286,996,901.25
  5. Step 5: Solve for x
    x = 1,142,286,996,901.25/1,221,505.84
  6. Step 6: Final answer
    x = 935,146.57

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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.