Home / 1,400,007.80-2,100,011.70-865,796.60

Finding the Fourth Proportional to 1,400,007.80, 2,100,011.70 and 865,796.60

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Solution

The fourth proportional to 1,400,007.80, 2,100,011.70 and 865,796.60 is: 1,298,694.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,400,007.80 : 2,100,011.70 = 865,796.60 : x
  2. Step 2: Convert to fraction form
    1,400,007.80/2,100,011.70 = 865,796.60/x
  3. Step 3: Cross multiply
    1,400,007.80x = 2,100,011.70 × 865,796.60
  4. Step 4: Simplify right side
    1,400,007.80x = 1,818,182,989,820.22
  5. Step 5: Solve for x
    x = 1,818,182,989,820.22/1,400,007.80
  6. Step 6: Final answer
    x = 1,298,694.90

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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.