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Finding the Fourth Proportional to 536,273.91, 740,109.39 and 306,785.63

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Solution

The fourth proportional to 536,273.91, 740,109.39 and 306,785.63 is: 423,393.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    536,273.91 : 740,109.39 = 306,785.63 : x
  2. Step 2: Convert to fraction form
    536,273.91/740,109.39 = 306,785.63/x
  3. Step 3: Cross multiply
    536,273.91x = 740,109.39 × 306,785.63
  4. Step 4: Simplify right side
    536,273.91x = 227,054,921,779.52
  5. Step 5: Solve for x
    x = 227,054,921,779.52/536,273.91
  6. Step 6: Final answer
    x = 423,393.56

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Double scale
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Similar ratio
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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.