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Finding the Fourth Proportional to 684,283.25, 943,866.00 and 438,879.30

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Solution

The fourth proportional to 684,283.25, 943,866.00 and 438,879.30 is: 605,368.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    684,283.25 : 943,866.00 = 438,879.30 : x
  2. Step 2: Convert to fraction form
    684,283.25/943,866.00 = 438,879.30/x
  3. Step 3: Cross multiply
    684,283.25x = 943,866.00 × 438,879.30
  4. Step 4: Simplify right side
    684,283.25x = 414,243,250,279.12
  5. Step 5: Solve for x
    x = 414,243,250,279.12/684,283.25
  6. Step 6: Final answer
    x = 605,368.10

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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.