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Finding the Fourth Proportional to 602,889.72, 831,817.35 and 388,154.10

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Solution

The fourth proportional to 602,889.72, 831,817.35 and 388,154.10 is: 535,542.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    602,889.72 : 831,817.35 = 388,154.10 : x
  2. Step 2: Convert to fraction form
    602,889.72/831,817.35 = 388,154.10/x
  3. Step 3: Cross multiply
    602,889.72x = 831,817.35 × 388,154.10
  4. Step 4: Simplify right side
    602,889.72x = 322,873,314,853.64
  5. Step 5: Solve for x
    x = 322,873,314,853.64/602,889.72
  6. Step 6: Final answer
    x = 535,542.91

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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.