Home / 479,630.26-661,274.85-393,271.30

Finding the Fourth Proportional to 479,630.26, 661,274.85 and 393,271.30

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Solution

The fourth proportional to 479,630.26, 661,274.85 and 393,271.30 is: 542,210.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,630.26 : 661,274.85 = 393,271.30 : x
  2. Step 2: Convert to fraction form
    479,630.26/661,274.85 = 393,271.30/x
  3. Step 3: Cross multiply
    479,630.26x = 661,274.85 × 393,271.30
  4. Step 4: Simplify right side
    479,630.26x = 260,060,419,916.81
  5. Step 5: Solve for x
    x = 260,060,419,916.81/479,630.26
  6. Step 6: Final answer
    x = 542,210.20

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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.