Home / 1,420,007.20-2,129,492.40-473,408.80

Finding the Fourth Proportional to 1,420,007.20, 2,129,492.40 and 473,408.80

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Solution

The fourth proportional to 1,420,007.20, 2,129,492.40 and 473,408.80 is: 709,940.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,420,007.20 : 2,129,492.40 = 473,408.80 : x
  2. Step 2: Convert to fraction form
    1,420,007.20/2,129,492.40 = 473,408.80/x
  3. Step 3: Cross multiply
    1,420,007.20x = 2,129,492.40 × 473,408.80
  4. Step 4: Simplify right side
    1,420,007.20x = 1,008,120,441,693.12
  5. Step 5: Solve for x
    x = 1,008,120,441,693.12/1,420,007.20
  6. Step 6: Final answer
    x = 709,940.37

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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.