Home / 756,421.40-1,134,632.10-689,936.60

Finding the Fourth Proportional to 756,421.40, 1,134,632.10 and 689,936.60

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Solution

The fourth proportional to 756,421.40, 1,134,632.10 and 689,936.60 is: 1,034,904.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    756,421.40 : 1,134,632.10 = 689,936.60 : x
  2. Step 2: Convert to fraction form
    756,421.40/1,134,632.10 = 689,936.60/x
  3. Step 3: Cross multiply
    756,421.40x = 1,134,632.10 × 689,936.60
  4. Step 4: Simplify right side
    756,421.40x = 782,824,213,324.86
  5. Step 5: Solve for x
    x = 782,824,213,324.86/756,421.40
  6. Step 6: Final answer
    x = 1,034,904.90

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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.