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Finding the Fourth Proportional to 691,501.76, 954,268.88 and 401,172.04

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Solution

The fourth proportional to 691,501.76, 954,268.88 and 401,172.04 is: 553,615.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,501.76 : 954,268.88 = 401,172.04 : x
  2. Step 2: Convert to fraction form
    691,501.76/954,268.88 = 401,172.04/x
  3. Step 3: Cross multiply
    691,501.76x = 954,268.88 × 401,172.04
  4. Step 4: Simplify right side
    691,501.76x = 382,825,993,298.12
  5. Step 5: Solve for x
    x = 382,825,993,298.12/691,501.76
  6. Step 6: Final answer
    x = 553,615.36

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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.