Home / 1,277,789.70-1,915,056.45-679,037.70

Finding the Fourth Proportional to 1,277,789.70, 1,915,056.45 and 679,037.70

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Solution

The fourth proportional to 1,277,789.70, 1,915,056.45 and 679,037.70 is: 1,017,691.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,277,789.70 : 1,915,056.45 = 679,037.70 : x
  2. Step 2: Convert to fraction form
    1,277,789.70/1,915,056.45 = 679,037.70/x
  3. Step 3: Cross multiply
    1,277,789.70x = 1,915,056.45 × 679,037.70
  4. Step 4: Simplify right side
    1,277,789.70x = 1,300,395,527,178.16
  5. Step 5: Solve for x
    x = 1,300,395,527,178.16/1,277,789.70
  6. Step 6: Final answer
    x = 1,017,691.35

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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.