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Finding the Fourth Proportional to 572,184.36, 789,431.76 and 330,435

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Solution

The fourth proportional to 572,184.36, 789,431.76 and 330,435 is: 455,894.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,184.36 : 789,431.76 = 330,435 : x
  2. Step 2: Convert to fraction form
    572,184.36/789,431.76 = 330,435/x
  3. Step 3: Cross multiply
    572,184.36x = 789,431.76 × 330,435
  4. Step 4: Simplify right side
    572,184.36x = 260,855,883,615.60
  5. Step 5: Solve for x
    x = 260,855,883,615.60/572,184.36
  6. Step 6: Final answer
    x = 455,894.82

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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.