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Finding the Fourth Proportional to 618,642.39, 928,033.68 and 555,071.94

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Solution

The fourth proportional to 618,642.39, 928,033.68 and 555,071.94 is: 832,670.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,642.39 : 928,033.68 = 555,071.94 : x
  2. Step 2: Convert to fraction form
    618,642.39/928,033.68 = 555,071.94/x
  3. Step 3: Cross multiply
    618,642.39x = 928,033.68 × 555,071.94
  4. Step 4: Simplify right side
    618,642.39x = 515,125,455,142.94
  5. Step 5: Solve for x
    x = 515,125,455,142.94/618,642.39
  6. Step 6: Final answer
    x = 832,670.80

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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.