Home / 631,285.20-946,121.40-256,885.20

Finding the Fourth Proportional to 631,285.20, 946,121.40 and 256,885.20

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Solution

The fourth proportional to 631,285.20, 946,121.40 and 256,885.20 is: 384,999.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,285.20 : 946,121.40 = 256,885.20 : x
  2. Step 2: Convert to fraction form
    631,285.20/946,121.40 = 256,885.20/x
  3. Step 3: Cross multiply
    631,285.20x = 946,121.40 × 256,885.20
  4. Step 4: Simplify right side
    631,285.20x = 243,044,585,063.28
  5. Step 5: Solve for x
    x = 243,044,585,063.28/631,285.20
  6. Step 6: Final answer
    x = 384,999.66

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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.