Home / 1,427,012.36-2,139,179.34-479,720.60

Finding the Fourth Proportional to 1,427,012.36, 2,139,179.34 and 479,720.60

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Solution

The fourth proportional to 1,427,012.36, 2,139,179.34 and 479,720.60 is: 719,130.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,427,012.36 : 2,139,179.34 = 479,720.60 : x
  2. Step 2: Convert to fraction form
    1,427,012.36/2,139,179.34 = 479,720.60/x
  3. Step 3: Cross multiply
    1,427,012.36x = 2,139,179.34 × 479,720.60
  4. Step 4: Simplify right side
    1,427,012.36x = 1,026,208,396,492.40
  5. Step 5: Solve for x
    x = 1,026,208,396,492.40/1,427,012.36
  6. Step 6: Final answer
    x = 719,130.70

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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.