Home / 859,093.70-1,288,640.55-498,894.80

Finding the Fourth Proportional to 859,093.70, 1,288,640.55 and 498,894.80

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Solution

The fourth proportional to 859,093.70, 1,288,640.55 and 498,894.80 is: 748,342.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    859,093.70 : 1,288,640.55 = 498,894.80 : x
  2. Step 2: Convert to fraction form
    859,093.70/1,288,640.55 = 498,894.80/x
  3. Step 3: Cross multiply
    859,093.70x = 1,288,640.55 × 498,894.80
  4. Step 4: Simplify right side
    859,093.70x = 642,896,069,464.14
  5. Step 5: Solve for x
    x = 642,896,069,464.14/859,093.70
  6. Step 6: Final answer
    x = 748,342.20

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Double scale
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Similar ratio
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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.