Home / 1,431,424.60-2,147,136.90-684,928.60

Finding the Fourth Proportional to 1,431,424.60, 2,147,136.90 and 684,928.60

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Solution

The fourth proportional to 1,431,424.60, 2,147,136.90 and 684,928.60 is: 1,027,392.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,431,424.60 : 2,147,136.90 = 684,928.60 : x
  2. Step 2: Convert to fraction form
    1,431,424.60/2,147,136.90 = 684,928.60/x
  3. Step 3: Cross multiply
    1,431,424.60x = 2,147,136.90 × 684,928.60
  4. Step 4: Simplify right side
    1,431,424.60x = 1,470,635,470,925.34
  5. Step 5: Solve for x
    x = 1,470,635,470,925.34/1,431,424.60
  6. Step 6: Final answer
    x = 1,027,392.90

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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.