Home / 8,321,123.20-12,481,684.80-6,977,430.40

Finding the Fourth Proportional to 8,321,123.20, 12,481,684.80 and 6,977,430.40

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Solution

The fourth proportional to 8,321,123.20, 12,481,684.80 and 6,977,430.40 is: 10,466,145.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,321,123.20 : 12,481,684.80 = 6,977,430.40 : x
  2. Step 2: Convert to fraction form
    8,321,123.20/12,481,684.80 = 6,977,430.40/x
  3. Step 3: Cross multiply
    8,321,123.20x = 12,481,684.80 × 6,977,430.40
  4. Step 4: Simplify right side
    8,321,123.20x = 87,090,086,966,737.94
  5. Step 5: Solve for x
    x = 87,090,086,966,737.94/8,321,123.20
  6. Step 6: Final answer
    x = 10,466,145.60

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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.