Home / 8,305,689.20-12,458,533.80-2,920,420.40

Finding the Fourth Proportional to 8,305,689.20, 12,458,533.80 and 2,920,420.40

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Solution

The fourth proportional to 8,305,689.20, 12,458,533.80 and 2,920,420.40 is: 4,380,630.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,305,689.20 : 12,458,533.80 = 2,920,420.40 : x
  2. Step 2: Convert to fraction form
    8,305,689.20/12,458,533.80 = 2,920,420.40/x
  3. Step 3: Cross multiply
    8,305,689.20x = 12,458,533.80 × 2,920,420.40
  4. Step 4: Simplify right side
    8,305,689.20x = 36,384,156,263,609.52
  5. Step 5: Solve for x
    x = 36,384,156,263,609.52/8,305,689.20
  6. Step 6: Final answer
    x = 4,380,630.60

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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.