Home / 18,864,000.80-28,296,001.20-8,079,466.40

Finding the Fourth Proportional to 18,864,000.80, 28,296,001.20 and 8,079,466.40

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Solution

The fourth proportional to 18,864,000.80, 28,296,001.20 and 8,079,466.40 is: 12,119,199.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,864,000.80 : 28,296,001.20 = 8,079,466.40 : x
  2. Step 2: Convert to fraction form
    18,864,000.80/28,296,001.20 = 8,079,466.40/x
  3. Step 3: Cross multiply
    18,864,000.80x = 28,296,001.20 × 8,079,466.40
  4. Step 4: Simplify right side
    18,864,000.80x = 228,616,590,949,759.69
  5. Step 5: Solve for x
    x = 228,616,590,949,759.69/18,864,000.80
  6. Step 6: Final answer
    x = 12,119,199.60

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Similar ratio
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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.