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Finding the Fourth Proportional to 610,469.88, 842,501.70 and 355,815.60

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Solution

The fourth proportional to 610,469.88, 842,501.70 and 355,815.60 is: 491,056.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    610,469.88 : 842,501.70 = 355,815.60 : x
  2. Step 2: Convert to fraction form
    610,469.88/842,501.70 = 355,815.60/x
  3. Step 3: Cross multiply
    610,469.88x = 842,501.70 × 355,815.60
  4. Step 4: Simplify right side
    610,469.88x = 299,775,247,886.52
  5. Step 5: Solve for x
    x = 299,775,247,886.52/610,469.88
  6. Step 6: Final answer
    x = 491,056.57

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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.