Home / 8,085,206.80-12,127,810.20-5,215,425.40

Finding the Fourth Proportional to 8,085,206.80, 12,127,810.20 and 5,215,425.40

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Solution

The fourth proportional to 8,085,206.80, 12,127,810.20 and 5,215,425.40 is: 7,823,138.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,085,206.80 : 12,127,810.20 = 5,215,425.40 : x
  2. Step 2: Convert to fraction form
    8,085,206.80/12,127,810.20 = 5,215,425.40/x
  3. Step 3: Cross multiply
    8,085,206.80x = 12,127,810.20 × 5,215,425.40
  4. Step 4: Simplify right side
    8,085,206.80x = 63,251,689,363,459.08
  5. Step 5: Solve for x
    x = 63,251,689,363,459.08/8,085,206.80
  6. Step 6: Final answer
    x = 7,823,138.10

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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.