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Finding the Fourth Proportional to 516,897.30, 774,179.55 and 306,945.30

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Solution

The fourth proportional to 516,897.30, 774,179.55 and 306,945.30 is: 459,725.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    516,897.30 : 774,179.55 = 306,945.30 : x
  2. Step 2: Convert to fraction form
    516,897.30/774,179.55 = 306,945.30/x
  3. Step 3: Cross multiply
    516,897.30x = 774,179.55 × 306,945.30
  4. Step 4: Simplify right side
    516,897.30x = 237,630,774,228.62
  5. Step 5: Solve for x
    x = 237,630,774,228.62/516,897.30
  6. Step 6: Final answer
    x = 459,725.32

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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 (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.