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Finding the Fourth Proportional to 826,155, 1,139,183.22 and 571,063.32

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Solution

The fourth proportional to 826,155, 1,139,183.22 and 571,063.32 is: 787,437.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    826,155 : 1,139,183.22 = 571,063.32 : x
  2. Step 2: Convert to fraction form
    826,155/1,139,183.22 = 571,063.32/x
  3. Step 3: Cross multiply
    826,155x = 1,139,183.22 × 571,063.32
  4. Step 4: Simplify right side
    826,155x = 650,545,751,701.49
  5. Step 5: Solve for x
    x = 650,545,751,701.49/826,155
  6. Step 6: Final answer
    x = 787,437.89

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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.