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Finding the Fourth Proportional to 612,903.47, 846,223.46 and 383,553.47

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Solution

The fourth proportional to 612,903.47, 846,223.46 and 383,553.47 is: 529,564.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,903.47 : 846,223.46 = 383,553.47 : x
  2. Step 2: Convert to fraction form
    612,903.47/846,223.46 = 383,553.47/x
  3. Step 3: Cross multiply
    612,903.47x = 846,223.46 × 383,553.47
  4. Step 4: Simplify right side
    612,903.47x = 324,571,938,329.52
  5. Step 5: Solve for x
    x = 324,571,938,329.52/612,903.47
  6. Step 6: Final answer
    x = 529,564.53

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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.