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Finding the Fourth Proportional to 666,520.52, 919,804.99 and 360,603.50

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Solution

The fourth proportional to 666,520.52, 919,804.99 and 360,603.50 is: 497,636.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,520.52 : 919,804.99 = 360,603.50 : x
  2. Step 2: Convert to fraction form
    666,520.52/919,804.99 = 360,603.50/x
  3. Step 3: Cross multiply
    666,520.52x = 919,804.99 × 360,603.50
  4. Step 4: Simplify right side
    666,520.52x = 331,684,894,901.26
  5. Step 5: Solve for x
    x = 331,684,894,901.26/666,520.52
  6. Step 6: Final answer
    x = 497,636.43

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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.