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Finding the Fourth Proportional to 559,516.32, 772,122.80 and 304,869.60

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Solution

The fourth proportional to 559,516.32, 772,122.80 and 304,869.60 is: 420,714.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    559,516.32 : 772,122.80 = 304,869.60 : x
  2. Step 2: Convert to fraction form
    559,516.32/772,122.80 = 304,869.60/x
  3. Step 3: Cross multiply
    559,516.32x = 772,122.80 × 304,869.60
  4. Step 4: Simplify right side
    559,516.32x = 235,396,769,186.88
  5. Step 5: Solve for x
    x = 235,396,769,186.88/559,516.32
  6. Step 6: Final answer
    x = 420,714.75

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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.