Home / 8,320,869.60-12,456,421.20-7,828,735.20

Finding the Fourth Proportional to 8,320,869.60, 12,456,421.20 and 7,828,735.20

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Solution

The fourth proportional to 8,320,869.60, 12,456,421.20 and 7,828,735.20 is: 11,719,691.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,320,869.60 : 12,456,421.20 = 7,828,735.20 : x
  2. Step 2: Convert to fraction form
    8,320,869.60/12,456,421.20 = 7,828,735.20/x
  3. Step 3: Cross multiply
    8,320,869.60x = 12,456,421.20 × 7,828,735.20
  4. Step 4: Simplify right side
    8,320,869.60x = 97,518,023,114,466.23
  5. Step 5: Solve for x
    x = 97,518,023,114,466.23/8,320,869.60
  6. Step 6: Final answer
    x = 11,719,691.31

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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.