Home / 8,319,103.40-12,478,655.10-7,899,199.40

Finding the Fourth Proportional to 8,319,103.40, 12,478,655.10 and 7,899,199.40

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Solution

The fourth proportional to 8,319,103.40, 12,478,655.10 and 7,899,199.40 is: 11,848,799.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,319,103.40 : 12,478,655.10 = 7,899,199.40 : x
  2. Step 2: Convert to fraction form
    8,319,103.40/12,478,655.10 = 7,899,199.40/x
  3. Step 3: Cross multiply
    8,319,103.40x = 12,478,655.10 × 7,899,199.40
  4. Step 4: Simplify right side
    8,319,103.40x = 98,571,384,878,726.94
  5. Step 5: Solve for x
    x = 98,571,384,878,726.94/8,319,103.40
  6. Step 6: Final answer
    x = 11,848,799.10

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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.