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Finding the Fourth Proportional to 560,778.08, 773,873.40 and 306,129.20

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Solution

The fourth proportional to 560,778.08, 773,873.40 and 306,129.20 is: 422,458.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    560,778.08 : 773,873.40 = 306,129.20 : x
  2. Step 2: Convert to fraction form
    560,778.08/773,873.40 = 306,129.20/x
  3. Step 3: Cross multiply
    560,778.08x = 773,873.40 × 306,129.20
  4. Step 4: Simplify right side
    560,778.08x = 236,905,244,843.28
  5. Step 5: Solve for x
    x = 236,905,244,843.28/560,778.08
  6. Step 6: Final answer
    x = 422,458.10

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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.