Home / 864,921.28-1,297,302.72-613,281.28

Finding the Fourth Proportional to 864,921.28, 1,297,302.72 and 613,281.28

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Solution

The fourth proportional to 864,921.28, 1,297,302.72 and 613,281.28 is: 919,865.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    864,921.28 : 1,297,302.72 = 613,281.28 : x
  2. Step 2: Convert to fraction form
    864,921.28/1,297,302.72 = 613,281.28/x
  3. Step 3: Cross multiply
    864,921.28x = 1,297,302.72 × 613,281.28
  4. Step 4: Simplify right side
    864,921.28x = 795,611,472,669.08
  5. Step 5: Solve for x
    x = 795,611,472,669.08/864,921.28
  6. Step 6: Final answer
    x = 919,865.76

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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.