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Finding the Fourth Proportional to 555,440.66, 831,737.88 and 384,425.45

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Solution

The fourth proportional to 555,440.66, 831,737.88 and 384,425.45 is: 575,653.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,440.66 : 831,737.88 = 384,425.45 : x
  2. Step 2: Convert to fraction form
    555,440.66/831,737.88 = 384,425.45/x
  3. Step 3: Cross multiply
    555,440.66x = 831,737.88 × 384,425.45
  4. Step 4: Simplify right side
    555,440.66x = 319,741,204,642.36
  5. Step 5: Solve for x
    x = 319,741,204,642.36/555,440.66
  6. Step 6: Final answer
    x = 575,653.23

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.