Home / 812,089.22-1,120,425.49-472,491.86

Finding the Fourth Proportional to 812,089.22, 1,120,425.49 and 472,491.86

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Solution

The fourth proportional to 812,089.22, 1,120,425.49 and 472,491.86 is: 651,888.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,089.22 : 1,120,425.49 = 472,491.86 : x
  2. Step 2: Convert to fraction form
    812,089.22/1,120,425.49 = 472,491.86/x
  3. Step 3: Cross multiply
    812,089.22x = 1,120,425.49 × 472,491.86
  4. Step 4: Simplify right side
    812,089.22x = 529,391,923,761.51
  5. Step 5: Solve for x
    x = 529,391,923,761.51/812,089.22
  6. Step 6: Final answer
    x = 651,888.87

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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.