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Finding the Fourth Proportional to 572,258.86, 789,534.57 and 330,509.50

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Solution

The fourth proportional to 572,258.86, 789,534.57 and 330,509.50 is: 455,997.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,258.86 : 789,534.57 = 330,509.50 : x
  2. Step 2: Convert to fraction form
    572,258.86/789,534.57 = 330,509.50/x
  3. Step 3: Cross multiply
    572,258.86x = 789,534.57 × 330,509.50
  4. Step 4: Simplify right side
    572,258.86x = 260,948,675,963.42
  5. Step 5: Solve for x
    x = 260,948,675,963.42/572,258.86
  6. Step 6: Final answer
    x = 455,997.62

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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.