Home / 1,118,278.81-1,543,289.61-842,142.30

Finding the Fourth Proportional to 1,118,278.81, 1,543,289.61 and 842,142.30

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Solution

The fourth proportional to 1,118,278.81, 1,543,289.61 and 842,142.30 is: 1,162,205.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,118,278.81 : 1,543,289.61 = 842,142.30 : x
  2. Step 2: Convert to fraction form
    1,118,278.81/1,543,289.61 = 842,142.30/x
  3. Step 3: Cross multiply
    1,118,278.81x = 1,543,289.61 × 842,142.30
  4. Step 4: Simplify right side
    1,118,278.81x = 1,299,669,461,731.50
  5. Step 5: Solve for x
    x = 1,299,669,461,731.50/1,118,278.81
  6. Step 6: Final answer
    x = 1,162,205.21

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.