Home / 756,007.20-1,134,010.80-457,408.80

Finding the Fourth Proportional to 756,007.20, 1,134,010.80 and 457,408.80

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Solution

The fourth proportional to 756,007.20, 1,134,010.80 and 457,408.80 is: 686,113.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    756,007.20 : 1,134,010.80 = 457,408.80 : x
  2. Step 2: Convert to fraction form
    756,007.20/1,134,010.80 = 457,408.80/x
  3. Step 3: Cross multiply
    756,007.20x = 1,134,010.80 × 457,408.80
  4. Step 4: Simplify right side
    756,007.20x = 518,706,519,215.04
  5. Step 5: Solve for x
    x = 518,706,519,215.04/756,007.20
  6. Step 6: Final answer
    x = 686,113.20

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1.5x scale

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.