Home / 1,121,765.40-1,682,648.10-411,557.40

Finding the Fourth Proportional to 1,121,765.40, 1,682,648.10 and 411,557.40

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Solution

The fourth proportional to 1,121,765.40, 1,682,648.10 and 411,557.40 is: 617,336.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,121,765.40 : 1,682,648.10 = 411,557.40 : x
  2. Step 2: Convert to fraction form
    1,121,765.40/1,682,648.10 = 411,557.40/x
  3. Step 3: Cross multiply
    1,121,765.40x = 1,682,648.10 × 411,557.40
  4. Step 4: Simplify right side
    1,121,765.40x = 692,506,277,150.94
  5. Step 5: Solve for x
    x = 692,506,277,150.94/1,121,765.40
  6. Step 6: Final answer
    x = 617,336.10

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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.