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Finding the Fourth Proportional to 461,720.73, 637,185.30 and 289,645.93

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Solution

The fourth proportional to 461,720.73, 637,185.30 and 289,645.93 is: 399,718.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    461,720.73 : 637,185.30 = 289,645.93 : x
  2. Step 2: Convert to fraction form
    461,720.73/637,185.30 = 289,645.93/x
  3. Step 3: Cross multiply
    461,720.73x = 637,185.30 × 289,645.93
  4. Step 4: Simplify right side
    461,720.73x = 184,558,128,800.83
  5. Step 5: Solve for x
    x = 184,558,128,800.83/461,720.73
  6. Step 6: Final answer
    x = 399,718.09

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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.