Home / 631,472.20-946,401.90-257,072.20

Finding the Fourth Proportional to 631,472.20, 946,401.90 and 257,072.20

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Solution

The fourth proportional to 631,472.20, 946,401.90 and 257,072.20 is: 385,280.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,472.20 : 946,401.90 = 257,072.20 : x
  2. Step 2: Convert to fraction form
    631,472.20/946,401.90 = 257,072.20/x
  3. Step 3: Cross multiply
    631,472.20x = 946,401.90 × 257,072.20
  4. Step 4: Simplify right side
    631,472.20x = 243,293,618,517.18
  5. Step 5: Solve for x
    x = 243,293,618,517.18/631,472.20
  6. Step 6: Final answer
    x = 385,280.01

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Double scale
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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.