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Finding the Fourth Proportional to 679,643.75, 937,888.53 and 373,719.81

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Solution

The fourth proportional to 679,643.75, 937,888.53 and 373,719.81 is: 515,722.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,643.75 : 937,888.53 = 373,719.81 : x
  2. Step 2: Convert to fraction form
    679,643.75/937,888.53 = 373,719.81/x
  3. Step 3: Cross multiply
    679,643.75x = 937,888.53 × 373,719.81
  4. Step 4: Simplify right side
    679,643.75x = 350,507,523,232.78
  5. Step 5: Solve for x
    x = 350,507,523,232.78/679,643.75
  6. Step 6: Final answer
    x = 515,722.43

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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.