Home / 7,240,172.38-9,990,354.98-4,142,203.66

Finding the Fourth Proportional to 7,240,172.38, 9,990,354.98 and 4,142,203.66

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Solution

The fourth proportional to 7,240,172.38, 9,990,354.98 and 4,142,203.66 is: 5,715,621.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,240,172.38 : 9,990,354.98 = 4,142,203.66 : x
  2. Step 2: Convert to fraction form
    7,240,172.38/9,990,354.98 = 4,142,203.66/x
  3. Step 3: Cross multiply
    7,240,172.38x = 9,990,354.98 × 4,142,203.66
  4. Step 4: Simplify right side
    7,240,172.38x = 41,382,084,962,855.23
  5. Step 5: Solve for x
    x = 41,382,084,962,855.23/7,240,172.38
  6. Step 6: Final answer
    x = 5,715,621.51

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.