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Finding the Fourth Proportional to 626,549.30, 864,639.02 and 340,069.51

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Solution

The fourth proportional to 626,549.30, 864,639.02 and 340,069.51 is: 469,296.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,549.30 : 864,639.02 = 340,069.51 : x
  2. Step 2: Convert to fraction form
    626,549.30/864,639.02 = 340,069.51/x
  3. Step 3: Cross multiply
    626,549.30x = 864,639.02 × 340,069.51
  4. Step 4: Simplify right side
    626,549.30x = 294,037,367,858.28
  5. Step 5: Solve for x
    x = 294,037,367,858.28/626,549.30
  6. Step 6: Final answer
    x = 469,296.46

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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.