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Finding the Fourth Proportional to 662,429.40, 992,477.70 and 543,456.60

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Solution

The fourth proportional to 662,429.40, 992,477.70 and 543,456.60 is: 814,227.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    662,429.40 : 992,477.70 = 543,456.60 : x
  2. Step 2: Convert to fraction form
    662,429.40/992,477.70 = 543,456.60/x
  3. Step 3: Cross multiply
    662,429.40x = 992,477.70 × 543,456.60
  4. Step 4: Simplify right side
    662,429.40x = 539,368,556,417.82
  5. Step 5: Solve for x
    x = 539,368,556,417.82/662,429.40
  6. Step 6: Final answer
    x = 814,227.99

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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.