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Finding the Fourth Proportional to 871,605.54, 1,309,857.75 and 516,670.02

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Solution

The fourth proportional to 871,605.54, 1,309,857.75 and 516,670.02 is: 776,457.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    871,605.54 : 1,309,857.75 = 516,670.02 : x
  2. Step 2: Convert to fraction form
    871,605.54/1,309,857.75 = 516,670.02/x
  3. Step 3: Cross multiply
    871,605.54x = 1,309,857.75 × 516,670.02
  4. Step 4: Simplify right side
    871,605.54x = 676,764,229,889.66
  5. Step 5: Solve for x
    x = 676,764,229,889.66/871,605.54
  6. Step 6: Final answer
    x = 776,457.01

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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.