Home / 922,643.40-1,383,965.10-257,795.40

Finding the Fourth Proportional to 922,643.40, 1,383,965.10 and 257,795.40

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Solution

The fourth proportional to 922,643.40, 1,383,965.10 and 257,795.40 is: 386,693.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    922,643.40 : 1,383,965.10 = 257,795.40 : x
  2. Step 2: Convert to fraction form
    922,643.40/1,383,965.10 = 257,795.40/x
  3. Step 3: Cross multiply
    922,643.40x = 1,383,965.10 × 257,795.40
  4. Step 4: Simplify right side
    922,643.40x = 356,779,836,540.54
  5. Step 5: Solve for x
    x = 356,779,836,540.54/922,643.40
  6. Step 6: Final answer
    x = 386,693.10

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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.