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Finding the Fourth Proportional to 615,977.19, 850,065.66 and 340,352.81

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Solution

The fourth proportional to 615,977.19, 850,065.66 and 340,352.81 is: 469,696.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,977.19 : 850,065.66 = 340,352.81 : x
  2. Step 2: Convert to fraction form
    615,977.19/850,065.66 = 340,352.81/x
  3. Step 3: Cross multiply
    615,977.19x = 850,065.66 × 340,352.81
  4. Step 4: Simplify right side
    615,977.19x = 289,322,236,065.51
  5. Step 5: Solve for x
    x = 289,322,236,065.51/615,977.19
  6. Step 6: Final answer
    x = 469,696.35

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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.