Home / 1,400,003.80-2,100,005.70-865,792.60

Finding the Fourth Proportional to 1,400,003.80, 2,100,005.70 and 865,792.60

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Solution

The fourth proportional to 1,400,003.80, 2,100,005.70 and 865,792.60 is: 1,298,688.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,400,003.80 : 2,100,005.70 = 865,792.60 : x
  2. Step 2: Convert to fraction form
    1,400,003.80/2,100,005.70 = 865,792.60/x
  3. Step 3: Cross multiply
    1,400,003.80x = 2,100,005.70 × 865,792.60
  4. Step 4: Simplify right side
    1,400,003.80x = 1,818,169,395,017.82
  5. Step 5: Solve for x
    x = 1,818,169,395,017.82/1,400,003.80
  6. Step 6: Final answer
    x = 1,298,688.90

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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.