Home / 689,585.40-1,034,378.10-190,949.40

Finding the Fourth Proportional to 689,585.40, 1,034,378.10 and 190,949.40

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Solution

The fourth proportional to 689,585.40, 1,034,378.10 and 190,949.40 is: 286,424.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,585.40 : 1,034,378.10 = 190,949.40 : x
  2. Step 2: Convert to fraction form
    689,585.40/1,034,378.10 = 190,949.40/x
  3. Step 3: Cross multiply
    689,585.40x = 1,034,378.10 × 190,949.40
  4. Step 4: Simplify right side
    689,585.40x = 197,513,877,568.14
  5. Step 5: Solve for x
    x = 197,513,877,568.14/689,585.40
  6. Step 6: Final answer
    x = 286,424.10

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Half scale
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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.