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Finding the Fourth Proportional to 555,696.79, 766,896.98 and 340,807.64

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Solution

The fourth proportional to 555,696.79, 766,896.98 and 340,807.64 is: 470,336.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,696.79 : 766,896.98 = 340,807.64 : x
  2. Step 2: Convert to fraction form
    555,696.79/766,896.98 = 340,807.64/x
  3. Step 3: Cross multiply
    555,696.79x = 766,896.98 × 340,807.64
  4. Step 4: Simplify right side
    555,696.79x = 261,364,344,338.40
  5. Step 5: Solve for x
    x = 261,364,344,338.40/555,696.79
  6. Step 6: Final answer
    x = 470,336.25

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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.