Home / 538,484.04-743,143.08-309,115.62

Finding the Fourth Proportional to 538,484.04, 743,143.08 and 309,115.62

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Solution

The fourth proportional to 538,484.04, 743,143.08 and 309,115.62 is: 426,599.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,484.04 : 743,143.08 = 309,115.62 : x
  2. Step 2: Convert to fraction form
    538,484.04/743,143.08 = 309,115.62/x
  3. Step 3: Cross multiply
    538,484.04x = 743,143.08 × 309,115.62
  4. Step 4: Simplify right side
    538,484.04x = 229,717,133,922.91
  5. Step 5: Solve for x
    x = 229,717,133,922.91/538,484.04
  6. Step 6: Final answer
    x = 426,599.71

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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.