Home / 1,348,299.09-1,861,400.12-919,209.69

Finding the Fourth Proportional to 1,348,299.09, 1,861,400.12 and 919,209.69

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Solution

The fourth proportional to 1,348,299.09, 1,861,400.12 and 919,209.69 is: 1,269,018.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,348,299.09 : 1,861,400.12 = 919,209.69 : x
  2. Step 2: Convert to fraction form
    1,348,299.09/1,861,400.12 = 919,209.69/x
  3. Step 3: Cross multiply
    1,348,299.09x = 1,861,400.12 × 919,209.69
  4. Step 4: Simplify right side
    1,348,299.09x = 1,711,017,022,675.11
  5. Step 5: Solve for x
    x = 1,711,017,022,675.11/1,348,299.09
  6. Step 6: Final answer
    x = 1,269,018.90

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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.