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Finding the Fourth Proportional to 545,036.63, 751,371.03 and 383,389.97

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Solution

The fourth proportional to 545,036.63, 751,371.03 and 383,389.97 is: 528,529.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,036.63 : 751,371.03 = 383,389.97 : x
  2. Step 2: Convert to fraction form
    545,036.63/751,371.03 = 383,389.97/x
  3. Step 3: Cross multiply
    545,036.63x = 751,371.03 × 383,389.97
  4. Step 4: Simplify right side
    545,036.63x = 288,068,112,893.71
  5. Step 5: Solve for x
    x = 288,068,112,893.71/545,036.63
  6. Step 6: Final answer
    x = 528,529.83

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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.