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Finding the Fourth Proportional to 571,717.76, 857,497.20 and 400,420.64

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Solution

The fourth proportional to 571,717.76, 857,497.20 and 400,420.64 is: 600,575.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,717.76 : 857,497.20 = 400,420.64 : x
  2. Step 2: Convert to fraction form
    571,717.76/857,497.20 = 400,420.64/x
  3. Step 3: Cross multiply
    571,717.76x = 857,497.20 × 400,420.64
  4. Step 4: Simplify right side
    571,717.76x = 343,359,577,622.21
  5. Step 5: Solve for x
    x = 343,359,577,622.21/571,717.76
  6. Step 6: Final answer
    x = 600,575.32

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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.