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Finding the Fourth Proportional to 571,420.71, 857,273.77 and 403,269.46

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Solution

The fourth proportional to 571,420.71, 857,273.77 and 403,269.46 is: 605,004.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,420.71 : 857,273.77 = 403,269.46 : x
  2. Step 2: Convert to fraction form
    571,420.71/857,273.77 = 403,269.46/x
  3. Step 3: Cross multiply
    571,420.71x = 857,273.77 × 403,269.46
  4. Step 4: Simplify right side
    571,420.71x = 345,712,330,300.06
  5. Step 5: Solve for x
    x = 345,712,330,300.06/571,420.71
  6. Step 6: Final answer
    x = 605,004.90

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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.