Home / 689,617.80-1,034,426.70-190,981.80

Finding the Fourth Proportional to 689,617.80, 1,034,426.70 and 190,981.80

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Solution

The fourth proportional to 689,617.80, 1,034,426.70 and 190,981.80 is: 286,472.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,617.80 : 1,034,426.70 = 190,981.80 : x
  2. Step 2: Convert to fraction form
    689,617.80/1,034,426.70 = 190,981.80/x
  3. Step 3: Cross multiply
    689,617.80x = 1,034,426.70 × 190,981.80
  4. Step 4: Simplify right side
    689,617.80x = 197,556,673,134.06
  5. Step 5: Solve for x
    x = 197,556,673,134.06/689,617.80
  6. Step 6: Final answer
    x = 286,472.70

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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.