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Finding the Fourth Proportional to 626,902.80, 940,872.60 and 290,461.20

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Solution

The fourth proportional to 626,902.80, 940,872.60 and 290,461.20 is: 435,931.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,902.80 : 940,872.60 = 290,461.20 : x
  2. Step 2: Convert to fraction form
    626,902.80/940,872.60 = 290,461.20/x
  3. Step 3: Cross multiply
    626,902.80x = 940,872.60 × 290,461.20
  4. Step 4: Simplify right side
    626,902.80x = 273,286,984,443.12
  5. Step 5: Solve for x
    x = 273,286,984,443.12/626,902.80
  6. Step 6: Final answer
    x = 435,931.99

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.