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Finding the Fourth Proportional to 571,400.28, 788,372.78 and 450,165.32

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Solution

The fourth proportional to 571,400.28, 788,372.78 and 450,165.32 is: 621,102.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,400.28 : 788,372.78 = 450,165.32 : x
  2. Step 2: Convert to fraction form
    571,400.28/788,372.78 = 450,165.32/x
  3. Step 3: Cross multiply
    571,400.28x = 788,372.78 × 450,165.32
  4. Step 4: Simplify right side
    571,400.28x = 354,898,084,787.99
  5. Step 5: Solve for x
    x = 354,898,084,787.99/571,400.28
  6. Step 6: Final answer
    x = 621,102.40

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.