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Finding the Fourth Proportional to 571,684.22, 788,918.84 and 313,555.90

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Solution

The fourth proportional to 571,684.22, 788,918.84 and 313,555.90 is: 432,704.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,684.22 : 788,918.84 = 313,555.90 : x
  2. Step 2: Convert to fraction form
    571,684.22/788,918.84 = 313,555.90/x
  3. Step 3: Cross multiply
    571,684.22x = 788,918.84 × 313,555.90
  4. Step 4: Simplify right side
    571,684.22x = 247,370,156,903.16
  5. Step 5: Solve for x
    x = 247,370,156,903.16/571,684.22
  6. Step 6: Final answer
    x = 432,704.19

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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.