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Finding the Fourth Proportional to 565,579.88, 780,515.01 and 307,474.19

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Solution

The fourth proportional to 565,579.88, 780,515.01 and 307,474.19 is: 424,322.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    565,579.88 : 780,515.01 = 307,474.19 : x
  2. Step 2: Convert to fraction form
    565,579.88/780,515.01 = 307,474.19/x
  3. Step 3: Cross multiply
    565,579.88x = 780,515.01 × 307,474.19
  4. Step 4: Simplify right side
    565,579.88x = 239,988,216,580.02
  5. Step 5: Solve for x
    x = 239,988,216,580.02/565,579.88
  6. Step 6: Final answer
    x = 424,322.41

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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.