Home / 1,400,143.92-2,100,326.40-689,784.48

Finding the Fourth Proportional to 1,400,143.92, 2,100,326.40 and 689,784.48

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Solution

The fourth proportional to 1,400,143.92, 2,100,326.40 and 689,784.48 is: 1,034,731.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,400,143.92 : 2,100,326.40 = 689,784.48 : x
  2. Step 2: Convert to fraction form
    1,400,143.92/2,100,326.40 = 689,784.48/x
  3. Step 3: Cross multiply
    1,400,143.92x = 2,100,326.40 × 689,784.48
  4. Step 4: Simplify right side
    1,400,143.92x = 1,448,772,553,654.27
  5. Step 5: Solve for x
    x = 1,448,772,553,654.27/1,400,143.92
  6. Step 6: Final answer
    x = 1,034,731.17

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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.