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Finding the Fourth Proportional to 547,764.80, 821,647.20 and 336,718.40

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Solution

The fourth proportional to 547,764.80, 821,647.20 and 336,718.40 is: 505,077.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,764.80 : 821,647.20 = 336,718.40 : x
  2. Step 2: Convert to fraction form
    547,764.80/821,647.20 = 336,718.40/x
  3. Step 3: Cross multiply
    547,764.80x = 821,647.20 × 336,718.40
  4. Step 4: Simplify right side
    547,764.80x = 276,663,730,548.48
  5. Step 5: Solve for x
    x = 276,663,730,548.48/547,764.80
  6. Step 6: Final answer
    x = 505,077.60

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.