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Finding the Fourth Proportional to 610,458.13, 842,485.49 and 355,803.85

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Solution

The fourth proportional to 610,458.13, 842,485.49 and 355,803.85 is: 491,040.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    610,458.13 : 842,485.49 = 355,803.85 : x
  2. Step 2: Convert to fraction form
    610,458.13/842,485.49 = 355,803.85/x
  3. Step 3: Cross multiply
    610,458.13x = 842,485.49 × 355,803.85
  4. Step 4: Simplify right side
    610,458.13x = 299,759,580,911.14
  5. Step 5: Solve for x
    x = 299,759,580,911.14/610,458.13
  6. Step 6: Final answer
    x = 491,040.36

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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.