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Finding the Fourth Proportional to 617,645.16, 852,278.70 and 345,728.28

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Solution

The fourth proportional to 617,645.16, 852,278.70 and 345,728.28 is: 477,064.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,645.16 : 852,278.70 = 345,728.28 : x
  2. Step 2: Convert to fraction form
    617,645.16/852,278.70 = 345,728.28/x
  3. Step 3: Cross multiply
    617,645.16x = 852,278.70 × 345,728.28
  4. Step 4: Simplify right side
    617,645.16x = 294,656,849,031.64
  5. Step 5: Solve for x
    x = 294,656,849,031.64/617,645.16
  6. Step 6: Final answer
    x = 477,064.94

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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.