Home / 8,720,139.40-13,080,209.10-6,828,497.80

Finding the Fourth Proportional to 8,720,139.40, 13,080,209.10 and 6,828,497.80

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Solution

The fourth proportional to 8,720,139.40, 13,080,209.10 and 6,828,497.80 is: 10,242,746.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,720,139.40 : 13,080,209.10 = 6,828,497.80 : x
  2. Step 2: Convert to fraction form
    8,720,139.40/13,080,209.10 = 6,828,497.80/x
  3. Step 3: Cross multiply
    8,720,139.40x = 13,080,209.10 × 6,828,497.80
  4. Step 4: Simplify right side
    8,720,139.40x = 89,318,179,062,889.97
  5. Step 5: Solve for x
    x = 89,318,179,062,889.97/8,720,139.40
  6. Step 6: Final answer
    x = 10,242,746.70

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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.