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Finding the Fourth Proportional to 602,883.84, 831,809.25 and 388,148.22

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Solution

The fourth proportional to 602,883.84, 831,809.25 and 388,148.22 is: 535,534.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    602,883.84 : 831,809.25 = 388,148.22 : x
  2. Step 2: Convert to fraction form
    602,883.84/831,809.25 = 388,148.22/x
  3. Step 3: Cross multiply
    602,883.84x = 831,809.25 × 388,148.22
  4. Step 4: Simplify right side
    602,883.84x = 322,865,279,767.04
  5. Step 5: Solve for x
    x = 322,865,279,767.04/602,883.84
  6. Step 6: Final answer
    x = 535,534.80

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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.