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Finding the Fourth Proportional to 571,222.32, 855,236.04 and 430,540.08

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Solution

The fourth proportional to 571,222.32, 855,236.04 and 430,540.08 is: 644,606.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,222.32 : 855,236.04 = 430,540.08 : x
  2. Step 2: Convert to fraction form
    571,222.32/855,236.04 = 430,540.08/x
  3. Step 3: Cross multiply
    571,222.32x = 855,236.04 × 430,540.08
  4. Step 4: Simplify right side
    571,222.32x = 368,213,393,080.48
  5. Step 5: Solve for x
    x = 368,213,393,080.48/571,222.32
  6. Step 6: Final answer
    x = 644,606.10

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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.