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Finding the Fourth Proportional to 451,957.52, 623,869.08 and 388,038.80

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Solution

The fourth proportional to 451,957.52, 623,869.08 and 388,038.80 is: 535,637.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    451,957.52 : 623,869.08 = 388,038.80 : x
  2. Step 2: Convert to fraction form
    451,957.52/623,869.08 = 388,038.80/x
  3. Step 3: Cross multiply
    451,957.52x = 623,869.08 × 388,038.80
  4. Step 4: Simplify right side
    451,957.52x = 242,085,409,160.30
  5. Step 5: Solve for x
    x = 242,085,409,160.30/451,957.52
  6. Step 6: Final answer
    x = 535,637.53

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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.