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Finding the Fourth Proportional to 519,478.69, 716,999.93 and 304,687.95

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Solution

The fourth proportional to 519,478.69, 716,999.93 and 304,687.95 is: 420,539.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,478.69 : 716,999.93 = 304,687.95 : x
  2. Step 2: Convert to fraction form
    519,478.69/716,999.93 = 304,687.95/x
  3. Step 3: Cross multiply
    519,478.69x = 716,999.93 × 304,687.95
  4. Step 4: Simplify right side
    519,478.69x = 218,461,238,821.84
  5. Step 5: Solve for x
    x = 218,461,238,821.84/519,478.69
  6. Step 6: Final answer
    x = 420,539.37

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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.