Home / 1,425,864.60-2,138,798.52-428,592.60

Finding the Fourth Proportional to 1,425,864.60, 2,138,798.52 and 428,592.60

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Solution

The fourth proportional to 1,425,864.60, 2,138,798.52 and 428,592.60 is: 642,889.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,425,864.60 : 2,138,798.52 = 428,592.60 : x
  2. Step 2: Convert to fraction form
    1,425,864.60/2,138,798.52 = 428,592.60/x
  3. Step 3: Cross multiply
    1,425,864.60x = 2,138,798.52 × 428,592.60
  4. Step 4: Simplify right side
    1,425,864.60x = 916,673,218,562.95
  5. Step 5: Solve for x
    x = 916,673,218,562.95/1,425,864.60
  6. Step 6: Final answer
    x = 642,889.39

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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.