Home / 1,089,969.40-1,633,398.90-803,423.80

Finding the Fourth Proportional to 1,089,969.40, 1,633,398.90 and 803,423.80

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Solution

The fourth proportional to 1,089,969.40, 1,633,398.90 and 803,423.80 is: 1,203,989.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,089,969.40 : 1,633,398.90 = 803,423.80 : x
  2. Step 2: Convert to fraction form
    1,089,969.40/1,633,398.90 = 803,423.80/x
  3. Step 3: Cross multiply
    1,089,969.40x = 1,633,398.90 × 803,423.80
  4. Step 4: Simplify right side
    1,089,969.40x = 1,312,311,551,153.82
  5. Step 5: Solve for x
    x = 1,312,311,551,153.82/1,089,969.40
  6. Step 6: Final answer
    x = 1,203,989.35

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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.