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Finding the Fourth Proportional to 573,409.11, 791,324.88 and 315,305.64

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Solution

The fourth proportional to 573,409.11, 791,324.88 and 315,305.64 is: 435,132.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    573,409.11 : 791,324.88 = 315,305.64 : x
  2. Step 2: Convert to fraction form
    573,409.11/791,324.88 = 315,305.64/x
  3. Step 3: Cross multiply
    573,409.11x = 791,324.88 × 315,305.64
  4. Step 4: Simplify right side
    573,409.11x = 249,509,197,736.32
  5. Step 5: Solve for x
    x = 249,509,197,736.32/573,409.11
  6. Step 6: Final answer
    x = 435,132.95

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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.