Home / 7,131,000.80-10,696,501.20-6,515,141.60

Finding the Fourth Proportional to 7,131,000.80, 10,696,501.20 and 6,515,141.60

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Solution

The fourth proportional to 7,131,000.80, 10,696,501.20 and 6,515,141.60 is: 9,772,712.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,131,000.80 : 10,696,501.20 = 6,515,141.60 : x
  2. Step 2: Convert to fraction form
    7,131,000.80/10,696,501.20 = 6,515,141.60/x
  3. Step 3: Cross multiply
    7,131,000.80x = 10,696,501.20 × 6,515,141.60
  4. Step 4: Simplify right side
    7,131,000.80x = 69,689,219,942,569.91
  5. Step 5: Solve for x
    x = 69,689,219,942,569.91/7,131,000.80
  6. Step 6: Final answer
    x = 9,772,712.40

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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.