Home / 486,069.12-670,898.52-290,046.60

Finding the Fourth Proportional to 486,069.12, 670,898.52 and 290,046.60

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Solution

The fourth proportional to 486,069.12, 670,898.52 and 290,046.60 is: 400,337.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,069.12 : 670,898.52 = 290,046.60 : x
  2. Step 2: Convert to fraction form
    486,069.12/670,898.52 = 290,046.60/x
  3. Step 3: Cross multiply
    486,069.12x = 670,898.52 × 290,046.60
  4. Step 4: Simplify right side
    486,069.12x = 194,591,834,671.03
  5. Step 5: Solve for x
    x = 194,591,834,671.03/486,069.12
  6. Step 6: Final answer
    x = 400,337.78

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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.