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Finding the Fourth Proportional to 551,092.38, 760,521.54 and 309,393.33

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Solution

The fourth proportional to 551,092.38, 760,521.54 and 309,393.33 is: 426,970.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,092.38 : 760,521.54 = 309,393.33 : x
  2. Step 2: Convert to fraction form
    551,092.38/760,521.54 = 309,393.33/x
  3. Step 3: Cross multiply
    551,092.38x = 760,521.54 × 309,393.33
  4. Step 4: Simplify right side
    551,092.38x = 235,300,291,797.33
  5. Step 5: Solve for x
    x = 235,300,291,797.33/551,092.38
  6. Step 6: Final answer
    x = 426,970.69

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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.