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Finding the Fourth Proportional to 1,277,349.03, 1,913,854.61 and 770,845.68

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Solution

The fourth proportional to 1,277,349.03, 1,913,854.61 and 770,845.68 is: 1,154,959.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,277,349.03 : 1,913,854.61 = 770,845.68 : x
  2. Step 2: Convert to fraction form
    1,277,349.03/1,913,854.61 = 770,845.68/x
  3. Step 3: Cross multiply
    1,277,349.03x = 1,913,854.61 × 770,845.68
  4. Step 4: Simplify right side
    1,277,349.03x = 1,475,286,560,193.70
  5. Step 5: Solve for x
    x = 1,475,286,560,193.70/1,277,349.03
  6. Step 6: Final answer
    x = 1,154,959.63

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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.