Home / 879,007.20-1,318,510.80-317,910.48

Finding the Fourth Proportional to 879,007.20, 1,318,510.80 and 317,910.48

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Solution

The fourth proportional to 879,007.20, 1,318,510.80 and 317,910.48 is: 476,865.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    879,007.20 : 1,318,510.80 = 317,910.48 : x
  2. Step 2: Convert to fraction form
    879,007.20/1,318,510.80 = 317,910.48/x
  3. Step 3: Cross multiply
    879,007.20x = 1,318,510.80 × 317,910.48
  4. Step 4: Simplify right side
    879,007.20x = 419,168,401,313.18
  5. Step 5: Solve for x
    x = 419,168,401,313.18/879,007.20
  6. Step 6: Final answer
    x = 476,865.72

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Similar ratio
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1.5x scale

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.