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Finding the Fourth Proportional to 543,533.73, 748,842.29 and 420,603.36

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Solution

The fourth proportional to 543,533.73, 748,842.29 and 420,603.36 is: 579,477.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,533.73 : 748,842.29 = 420,603.36 : x
  2. Step 2: Convert to fraction form
    543,533.73/748,842.29 = 420,603.36/x
  3. Step 3: Cross multiply
    543,533.73x = 748,842.29 × 420,603.36
  4. Step 4: Simplify right side
    543,533.73x = 314,965,577,436.87
  5. Step 5: Solve for x
    x = 314,965,577,436.87/543,533.73
  6. Step 6: Final answer
    x = 579,477.52

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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.