Home / 1,231,998.57-1,700,140.10-688,142.12

Finding the Fourth Proportional to 1,231,998.57, 1,700,140.10 and 688,142.12

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Solution

The fourth proportional to 1,231,998.57, 1,700,140.10 and 688,142.12 is: 949,626.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,231,998.57 : 1,700,140.10 = 688,142.12 : x
  2. Step 2: Convert to fraction form
    1,231,998.57/1,700,140.10 = 688,142.12/x
  3. Step 3: Cross multiply
    1,231,998.57x = 1,700,140.10 × 688,142.12
  4. Step 4: Simplify right side
    1,231,998.57x = 1,169,938,000,769.60
  5. Step 5: Solve for x
    x = 1,169,938,000,769.60/1,231,998.57
  6. Step 6: Final answer
    x = 949,626.10

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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.