Home / 505,933.40-757,540.12-385,416.20

Finding the Fourth Proportional to 505,933.40, 757,540.12 and 385,416.20

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Solution

The fourth proportional to 505,933.40, 757,540.12 and 385,416.20 is: 577,088.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,933.40 : 757,540.12 = 385,416.20 : x
  2. Step 2: Convert to fraction form
    505,933.40/757,540.12 = 385,416.20/x
  3. Step 3: Cross multiply
    505,933.40x = 757,540.12 × 385,416.20
  4. Step 4: Simplify right side
    505,933.40x = 291,968,234,397.94
  5. Step 5: Solve for x
    x = 291,968,234,397.94/505,933.40
  6. Step 6: Final answer
    x = 577,088.28

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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.