Home / 7,170,001.20-10,755,001.80-6,386,180.40

Finding the Fourth Proportional to 7,170,001.20, 10,755,001.80 and 6,386,180.40

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Solution

The fourth proportional to 7,170,001.20, 10,755,001.80 and 6,386,180.40 is: 9,579,270.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,170,001.20 : 10,755,001.80 = 6,386,180.40 : x
  2. Step 2: Convert to fraction form
    7,170,001.20/10,755,001.80 = 6,386,180.40/x
  3. Step 3: Cross multiply
    7,170,001.20x = 10,755,001.80 × 6,386,180.40
  4. Step 4: Simplify right side
    7,170,001.20x = 68,683,381,697,124.73
  5. Step 5: Solve for x
    x = 68,683,381,697,124.73/7,170,001.20
  6. Step 6: Final answer
    x = 9,579,270.60

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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.