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Finding the Fourth Proportional to 611,626.60, 844,055.94 and 339,719.72

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Solution

The fourth proportional to 611,626.60, 844,055.94 and 339,719.72 is: 468,819.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,626.60 : 844,055.94 = 339,719.72 : x
  2. Step 2: Convert to fraction form
    611,626.60/844,055.94 = 339,719.72/x
  3. Step 3: Cross multiply
    611,626.60x = 844,055.94 × 339,719.72
  4. Step 4: Simplify right side
    611,626.60x = 286,742,447,601.14
  5. Step 5: Solve for x
    x = 286,742,447,601.14/611,626.60
  6. Step 6: Final answer
    x = 468,819.45

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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.