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Finding the Fourth Proportional to 602,679.75, 831,643.05 and 357,622.27

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Solution

The fourth proportional to 602,679.75, 831,643.05 and 357,622.27 is: 493,486.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    602,679.75 : 831,643.05 = 357,622.27 : x
  2. Step 2: Convert to fraction form
    602,679.75/831,643.05 = 357,622.27/x
  3. Step 3: Cross multiply
    602,679.75x = 831,643.05 × 357,622.27
  4. Step 4: Simplify right side
    602,679.75x = 297,414,075,370.72
  5. Step 5: Solve for x
    x = 297,414,075,370.72/602,679.75
  6. Step 6: Final answer
    x = 493,486.09

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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.