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Finding the Fourth Proportional to 626,860.80, 940,809.60 and 290,419.20

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Solution

The fourth proportional to 626,860.80, 940,809.60 and 290,419.20 is: 435,868.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,860.80 : 940,809.60 = 290,419.20 : x
  2. Step 2: Convert to fraction form
    626,860.80/940,809.60 = 290,419.20/x
  3. Step 3: Cross multiply
    626,860.80x = 940,809.60 × 290,419.20
  4. Step 4: Simplify right side
    626,860.80x = 273,229,171,384.32
  5. Step 5: Solve for x
    x = 273,229,171,384.32/626,860.80
  6. Step 6: Final answer
    x = 435,868.97

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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.