Home / 769,312.59-1,061,654.61-420,460.02

Finding the Fourth Proportional to 769,312.59, 1,061,654.61 and 420,460.02

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Solution

The fourth proportional to 769,312.59, 1,061,654.61 and 420,460.02 is: 580,236.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    769,312.59 : 1,061,654.61 = 420,460.02 : x
  2. Step 2: Convert to fraction form
    769,312.59/1,061,654.61 = 420,460.02/x
  3. Step 3: Cross multiply
    769,312.59x = 1,061,654.61 × 420,460.02
  4. Step 4: Simplify right side
    769,312.59x = 446,383,318,553.69
  5. Step 5: Solve for x
    x = 446,383,318,553.69/769,312.59
  6. Step 6: Final answer
    x = 580,236.60

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1.5x scale

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.