Home / 420,528.58-630,889.44-121,011.64

Finding the Fourth Proportional to 420,528.58, 630,889.44 and 121,011.64

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Solution

The fourth proportional to 420,528.58, 630,889.44 and 121,011.64 is: 181,545.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,528.58 : 630,889.44 = 121,011.64 : x
  2. Step 2: Convert to fraction form
    420,528.58/630,889.44 = 121,011.64/x
  3. Step 3: Cross multiply
    420,528.58x = 630,889.44 × 121,011.64
  4. Step 4: Simplify right side
    420,528.58x = 76,344,965,793.08
  5. Step 5: Solve for x
    x = 76,344,965,793.08/420,528.58
  6. Step 6: Final answer
    x = 181,545.25

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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.