Home / 1,336,670.40-2,005,005.60-390,136.80

Finding the Fourth Proportional to 1,336,670.40, 2,005,005.60 and 390,136.80

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Solution

The fourth proportional to 1,336,670.40, 2,005,005.60 and 390,136.80 is: 585,205.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,336,670.40 : 2,005,005.60 = 390,136.80 : x
  2. Step 2: Convert to fraction form
    1,336,670.40/2,005,005.60 = 390,136.80/x
  3. Step 3: Cross multiply
    1,336,670.40x = 2,005,005.60 × 390,136.80
  4. Step 4: Simplify right side
    1,336,670.40x = 782,226,468,766.08
  5. Step 5: Solve for x
    x = 782,226,468,766.08/1,336,670.40
  6. Step 6: Final answer
    x = 585,205.20

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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.