Home / 689,853.70-1,034,780.55-370,989.10

Finding the Fourth Proportional to 689,853.70, 1,034,780.55 and 370,989.10

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Solution

The fourth proportional to 689,853.70, 1,034,780.55 and 370,989.10 is: 556,483.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,853.70 : 1,034,780.55 = 370,989.10 : x
  2. Step 2: Convert to fraction form
    689,853.70/1,034,780.55 = 370,989.10/x
  3. Step 3: Cross multiply
    689,853.70x = 1,034,780.55 × 370,989.10
  4. Step 4: Simplify right side
    689,853.70x = 383,892,304,942.01
  5. Step 5: Solve for x
    x = 383,892,304,942.01/689,853.70
  6. Step 6: Final answer
    x = 556,483.65

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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.