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Finding the Fourth Proportional to 545,477.78, 817,936.50 and 292,970.81

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Solution

The fourth proportional to 545,477.78, 817,936.50 and 292,970.81 is: 439,305.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,477.78 : 817,936.50 = 292,970.81 : x
  2. Step 2: Convert to fraction form
    545,477.78/817,936.50 = 292,970.81/x
  3. Step 3: Cross multiply
    545,477.78x = 817,936.50 × 292,970.81
  4. Step 4: Simplify right side
    545,477.78x = 239,631,514,843.88
  5. Step 5: Solve for x
    x = 239,631,514,843.88/545,477.78
  6. Step 6: Final answer
    x = 439,305.73

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.