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Finding the Fourth Proportional to 559,672.12, 772,325.04 and 305,017.84

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Solution

The fourth proportional to 559,672.12, 772,325.04 and 305,017.84 is: 420,912.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    559,672.12 : 772,325.04 = 305,017.84 : x
  2. Step 2: Convert to fraction form
    559,672.12/772,325.04 = 305,017.84/x
  3. Step 3: Cross multiply
    559,672.12x = 772,325.04 × 305,017.84
  4. Step 4: Simplify right side
    559,672.12x = 235,572,915,478.71
  5. Step 5: Solve for x
    x = 235,572,915,478.71/559,672.12
  6. Step 6: Final answer
    x = 420,912.36

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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.