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Finding the Fourth Proportional to 571,301.18, 788,646.76 and 399,892.34

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Solution

The fourth proportional to 571,301.18, 788,646.76 and 399,892.34 is: 552,027.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,301.18 : 788,646.76 = 399,892.34 : x
  2. Step 2: Convert to fraction form
    571,301.18/788,646.76 = 399,892.34/x
  3. Step 3: Cross multiply
    571,301.18x = 788,646.76 × 399,892.34
  4. Step 4: Simplify right side
    571,301.18x = 315,373,798,289.82
  5. Step 5: Solve for x
    x = 315,373,798,289.82/571,301.18
  6. Step 6: Final answer
    x = 552,027.21

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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.