Home / 521,898.20-720,207.32-307,052.10

Finding the Fourth Proportional to 521,898.20, 720,207.32 and 307,052.10

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Solution

The fourth proportional to 521,898.20, 720,207.32 and 307,052.10 is: 423,724.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,898.20 : 720,207.32 = 307,052.10 : x
  2. Step 2: Convert to fraction form
    521,898.20/720,207.32 = 307,052.10/x
  3. Step 3: Cross multiply
    521,898.20x = 720,207.32 × 307,052.10
  4. Step 4: Simplify right side
    521,898.20x = 221,141,170,041.37
  5. Step 5: Solve for x
    x = 221,141,170,041.37/521,898.20
  6. Step 6: Final answer
    x = 423,724.72

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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.