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Finding the Fourth Proportional to 543,532.73, 748,840.91 and 420,602.36

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Solution

The fourth proportional to 543,532.73, 748,840.91 and 420,602.36 is: 579,476.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,532.73 : 748,840.91 = 420,602.36 : x
  2. Step 2: Convert to fraction form
    543,532.73/748,840.91 = 420,602.36/x
  3. Step 3: Cross multiply
    543,532.73x = 748,840.91 × 420,602.36
  4. Step 4: Simplify right side
    543,532.73x = 314,964,248,163.33
  5. Step 5: Solve for x
    x = 314,964,248,163.33/543,532.73
  6. Step 6: Final answer
    x = 579,476.14

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1.5x scale

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.