Home / 912,410.40-1,368,615.60-413,774.40

Finding the Fourth Proportional to 912,410.40, 1,368,615.60 and 413,774.40

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Solution

The fourth proportional to 912,410.40, 1,368,615.60 and 413,774.40 is: 620,661.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    912,410.40 : 1,368,615.60 = 413,774.40 : x
  2. Step 2: Convert to fraction form
    912,410.40/1,368,615.60 = 413,774.40/x
  3. Step 3: Cross multiply
    912,410.40x = 1,368,615.60 × 413,774.40
  4. Step 4: Simplify right side
    912,410.40x = 566,298,098,720.64
  5. Step 5: Solve for x
    x = 566,298,098,720.64/912,410.40
  6. Step 6: Final answer
    x = 620,661.60

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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.