Home / 810,220.64-1,118,009.16-447,622.88

Finding the Fourth Proportional to 810,220.64, 1,118,009.16 and 447,622.88

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Solution

The fourth proportional to 810,220.64, 1,118,009.16 and 447,622.88 is: 617,666.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    810,220.64 : 1,118,009.16 = 447,622.88 : x
  2. Step 2: Convert to fraction form
    810,220.64/1,118,009.16 = 447,622.88/x
  3. Step 3: Cross multiply
    810,220.64x = 1,118,009.16 × 447,622.88
  4. Step 4: Simplify right side
    810,220.64x = 500,446,474,475.54
  5. Step 5: Solve for x
    x = 500,446,474,475.54/810,220.64
  6. Step 6: Final answer
    x = 617,666.91

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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.