Home / 842,020.64-1,263,529.12-309,915.36

Finding the Fourth Proportional to 842,020.64, 1,263,529.12 and 309,915.36

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Solution

The fourth proportional to 842,020.64, 1,263,529.12 and 309,915.36 is: 465,056.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    842,020.64 : 1,263,529.12 = 309,915.36 : x
  2. Step 2: Convert to fraction form
    842,020.64/1,263,529.12 = 309,915.36/x
  3. Step 3: Cross multiply
    842,020.64x = 1,263,529.12 × 309,915.36
  4. Step 4: Simplify right side
    842,020.64x = 391,587,082,095.28
  5. Step 5: Solve for x
    x = 391,587,082,095.28/842,020.64
  6. Step 6: Final answer
    x = 465,056.39

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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.