Home / 1,091,388.40-1,636,683.48-417,136.30

Finding the Fourth Proportional to 1,091,388.40, 1,636,683.48 and 417,136.30

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Solution

The fourth proportional to 1,091,388.40, 1,636,683.48 and 417,136.30 is: 625,551.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,091,388.40 : 1,636,683.48 = 417,136.30 : x
  2. Step 2: Convert to fraction form
    1,091,388.40/1,636,683.48 = 417,136.30/x
  3. Step 3: Cross multiply
    1,091,388.40x = 1,636,683.48 × 417,136.30
  4. Step 4: Simplify right side
    1,091,388.40x = 682,720,091,118.32
  5. Step 5: Solve for x
    x = 682,720,091,118.32/1,091,388.40
  6. Step 6: Final answer
    x = 625,551.90

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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.