Home / 3,121,470-4,307,628.60-1,690,686

Finding the Fourth Proportional to 3,121,470, 4,307,628.60 and 1,690,686

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Solution

The fourth proportional to 3,121,470, 4,307,628.60 and 1,690,686 is: 2,333,146.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,121,470 : 4,307,628.60 = 1,690,686 : x
  2. Step 2: Convert to fraction form
    3,121,470/4,307,628.60 = 1,690,686/x
  3. Step 3: Cross multiply
    3,121,470x = 4,307,628.60 × 1,690,686
  4. Step 4: Simplify right side
    3,121,470x = 7,282,847,367,219.60
  5. Step 5: Solve for x
    x = 7,282,847,367,219.60/3,121,470
  6. Step 6: Final answer
    x = 2,333,146.68

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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.