Home / 1,405,266.60-2,107,681.20-394,289.40

Finding the Fourth Proportional to 1,405,266.60, 2,107,681.20 and 394,289.40

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Solution

The fourth proportional to 1,405,266.60, 2,107,681.20 and 394,289.40 is: 591,372.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,405,266.60 : 2,107,681.20 = 394,289.40 : x
  2. Step 2: Convert to fraction form
    1,405,266.60/2,107,681.20 = 394,289.40/x
  3. Step 3: Cross multiply
    1,405,266.60x = 2,107,681.20 × 394,289.40
  4. Step 4: Simplify right side
    1,405,266.60x = 831,036,355,739.28
  5. Step 5: Solve for x
    x = 831,036,355,739.28/1,405,266.60
  6. Step 6: Final answer
    x = 591,372.74

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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.