Home / 8,319,078.20-12,478,617.30-7,945,830.20

Finding the Fourth Proportional to 8,319,078.20, 12,478,617.30 and 7,945,830.20

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Solution

The fourth proportional to 8,319,078.20, 12,478,617.30 and 7,945,830.20 is: 11,918,745.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,319,078.20 : 12,478,617.30 = 7,945,830.20 : x
  2. Step 2: Convert to fraction form
    8,319,078.20/12,478,617.30 = 7,945,830.20/x
  3. Step 3: Cross multiply
    8,319,078.20x = 12,478,617.30 × 7,945,830.20
  4. Step 4: Simplify right side
    8,319,078.20x = 99,152,974,196,582.47
  5. Step 5: Solve for x
    x = 99,152,974,196,582.47/8,319,078.20
  6. Step 6: Final answer
    x = 11,918,745.30

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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.