Home / 806,399.72-1,210,346.81-407,320.22

Finding the Fourth Proportional to 806,399.72, 1,210,346.81 and 407,320.22

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Solution

The fourth proportional to 806,399.72, 1,210,346.81 and 407,320.22 is: 611,357.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    806,399.72 : 1,210,346.81 = 407,320.22 : x
  2. Step 2: Convert to fraction form
    806,399.72/1,210,346.81 = 407,320.22/x
  3. Step 3: Cross multiply
    806,399.72x = 1,210,346.81 × 407,320.22
  4. Step 4: Simplify right side
    806,399.72x = 492,998,720,837.16
  5. Step 5: Solve for x
    x = 492,998,720,837.16/806,399.72
  6. Step 6: Final answer
    x = 611,357.76

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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.