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Finding the Fourth Proportional to 631,479.80, 946,874.10 and 257,079.80

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Solution

The fourth proportional to 631,479.80, 946,874.10 and 257,079.80 is: 385,479.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,479.80 : 946,874.10 = 257,079.80 : x
  2. Step 2: Convert to fraction form
    631,479.80/946,874.10 = 257,079.80/x
  3. Step 3: Cross multiply
    631,479.80x = 946,874.10 × 257,079.80
  4. Step 4: Simplify right side
    631,479.80x = 243,422,204,253.18
  5. Step 5: Solve for x
    x = 243,422,204,253.18/631,479.80
  6. Step 6: Final answer
    x = 385,479.00

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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.