Home / 809,807.76-1,117,485.72-487,622.16

Finding the Fourth Proportional to 809,807.76, 1,117,485.72 and 487,622.16

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Solution

The fourth proportional to 809,807.76, 1,117,485.72 and 487,622.16 is: 672,889.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    809,807.76 : 1,117,485.72 = 487,622.16 : x
  2. Step 2: Convert to fraction form
    809,807.76/1,117,485.72 = 487,622.16/x
  3. Step 3: Cross multiply
    809,807.76x = 1,117,485.72 × 487,622.16
  4. Step 4: Simplify right side
    809,807.76x = 544,910,800,555.56
  5. Step 5: Solve for x
    x = 544,910,800,555.56/809,807.76
  6. Step 6: Final answer
    x = 672,889.08

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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.