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Finding the Fourth Proportional to 621,304.60, 856,907.22 and 403,274.92

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Solution

The fourth proportional to 621,304.60, 856,907.22 and 403,274.92 is: 556,199.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,304.60 : 856,907.22 = 403,274.92 : x
  2. Step 2: Convert to fraction form
    621,304.60/856,907.22 = 403,274.92/x
  3. Step 3: Cross multiply
    621,304.60x = 856,907.22 × 403,274.92
  4. Step 4: Simplify right side
    621,304.60x = 345,569,190,592.92
  5. Step 5: Solve for x
    x = 345,569,190,592.92/621,304.60
  6. Step 6: Final answer
    x = 556,199.31

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1.5x scale

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.