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Finding the Fourth Proportional to 617,763.69, 852,513.66 and 345,895.31

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Solution

The fourth proportional to 617,763.69, 852,513.66 and 345,895.31 is: 477,335.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,763.69 : 852,513.66 = 345,895.31 : x
  2. Step 2: Convert to fraction form
    617,763.69/852,513.66 = 345,895.31/x
  3. Step 3: Cross multiply
    617,763.69x = 852,513.66 × 345,895.31
  4. Step 4: Simplify right side
    617,763.69x = 294,880,478,836.22
  5. Step 5: Solve for x
    x = 294,880,478,836.22/617,763.69
  6. Step 6: Final answer
    x = 477,335.40

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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.