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Finding the Fourth Proportional to 626,561.98, 864,656.30 and 340,082.03

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Solution

The fourth proportional to 626,561.98, 864,656.30 and 340,082.03 is: 469,313.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,561.98 : 864,656.30 = 340,082.03 : x
  2. Step 2: Convert to fraction form
    626,561.98/864,656.30 = 340,082.03/x
  3. Step 3: Cross multiply
    626,561.98x = 864,656.30 × 340,082.03
  4. Step 4: Simplify right side
    626,561.98x = 294,054,069,756.29
  5. Step 5: Solve for x
    x = 294,054,069,756.29/626,561.98
  6. Step 6: Final answer
    x = 469,313.62

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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.