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Finding the Fourth Proportional to 571,704.94, 788,938.95 and 313,585.30

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Solution

The fourth proportional to 571,704.94, 788,938.95 and 313,585.30 is: 432,740.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,704.94 : 788,938.95 = 313,585.30 : x
  2. Step 2: Convert to fraction form
    571,704.94/788,938.95 = 313,585.30/x
  3. Step 3: Cross multiply
    571,704.94x = 788,938.95 × 313,585.30
  4. Step 4: Simplify right side
    571,704.94x = 247,399,657,317.44
  5. Step 5: Solve for x
    x = 247,399,657,317.44/571,704.94
  6. Step 6: Final answer
    x = 432,740.11

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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.