Home / 638,298.20-957,447.30-189,088.40

Finding the Fourth Proportional to 638,298.20, 957,447.30 and 189,088.40

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Solution

The fourth proportional to 638,298.20, 957,447.30 and 189,088.40 is: 283,632.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,298.20 : 957,447.30 = 189,088.40 : x
  2. Step 2: Convert to fraction form
    638,298.20/957,447.30 = 189,088.40/x
  3. Step 3: Cross multiply
    638,298.20x = 957,447.30 × 189,088.40
  4. Step 4: Simplify right side
    638,298.20x = 181,042,178,041.32
  5. Step 5: Solve for x
    x = 181,042,178,041.32/638,298.20
  6. Step 6: Final answer
    x = 283,632.60

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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.