Home / 859,504.80-1,289,260.80-290,890.40

Finding the Fourth Proportional to 859,504.80, 1,289,260.80 and 290,890.40

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Solution

The fourth proportional to 859,504.80, 1,289,260.80 and 290,890.40 is: 436,336.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    859,504.80 : 1,289,260.80 = 290,890.40 : x
  2. Step 2: Convert to fraction form
    859,504.80/1,289,260.80 = 290,890.40/x
  3. Step 3: Cross multiply
    859,504.80x = 1,289,260.80 × 290,890.40
  4. Step 4: Simplify right side
    859,504.80x = 375,033,589,816.32
  5. Step 5: Solve for x
    x = 375,033,589,816.32/859,504.80
  6. Step 6: Final answer
    x = 436,336.82

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Double scale
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1.5x scale

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.