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Finding the Fourth Proportional to 571,439.05, 857,027.39 and 340,693.32

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Solution

The fourth proportional to 571,439.05, 857,027.39 and 340,693.32 is: 510,961.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,439.05 : 857,027.39 = 340,693.32 : x
  2. Step 2: Convert to fraction form
    571,439.05/857,027.39 = 340,693.32/x
  3. Step 3: Cross multiply
    571,439.05x = 857,027.39 × 340,693.32
  4. Step 4: Simplify right side
    571,439.05x = 291,983,507,681.77
  5. Step 5: Solve for x
    x = 291,983,507,681.77/571,439.05
  6. Step 6: Final answer
    x = 510,961.77

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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.