Home / 781,015.14-1,078,359.48-609,125.09

Finding the Fourth Proportional to 781,015.14, 1,078,359.48 and 609,125.09

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Solution

The fourth proportional to 781,015.14, 1,078,359.48 and 609,125.09 is: 841,028.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    781,015.14 : 1,078,359.48 = 609,125.09 : x
  2. Step 2: Convert to fraction form
    781,015.14/1,078,359.48 = 609,125.09/x
  3. Step 3: Cross multiply
    781,015.14x = 1,078,359.48 × 609,125.09
  4. Step 4: Simplify right side
    781,015.14x = 656,855,809,915.56
  5. Step 5: Solve for x
    x = 656,855,809,915.56/781,015.14
  6. Step 6: Final answer
    x = 841,028.27

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1.5x scale

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.