Home / 631,479.20-946,412.40-257,079.20

Finding the Fourth Proportional to 631,479.20, 946,412.40 and 257,079.20

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Solution

The fourth proportional to 631,479.20, 946,412.40 and 257,079.20 is: 385,290.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,479.20 : 946,412.40 = 257,079.20 : x
  2. Step 2: Convert to fraction form
    631,479.20/946,412.40 = 257,079.20/x
  3. Step 3: Cross multiply
    631,479.20x = 946,412.40 × 257,079.20
  4. Step 4: Simplify right side
    631,479.20x = 243,302,942,662.08
  5. Step 5: Solve for x
    x = 243,302,942,662.08/631,479.20
  6. Step 6: Final answer
    x = 385,290.51

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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.