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Finding the Fourth Proportional to 626,651.76, 864,780.53 and 340,172.04

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Solution

The fourth proportional to 626,651.76, 864,780.53 and 340,172.04 is: 469,438.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,651.76 : 864,780.53 = 340,172.04 : x
  2. Step 2: Convert to fraction form
    626,651.76/864,780.53 = 340,172.04/x
  3. Step 3: Cross multiply
    626,651.76x = 864,780.53 × 340,172.04
  4. Step 4: Simplify right side
    626,651.76x = 294,174,157,042.38
  5. Step 5: Solve for x
    x = 294,174,157,042.38/626,651.76
  6. Step 6: Final answer
    x = 469,438.01

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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.