Home / 1,240,615.20-1,861,246.80-399,187.20

Finding the Fourth Proportional to 1,240,615.20, 1,861,246.80 and 399,187.20

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Solution

The fourth proportional to 1,240,615.20, 1,861,246.80 and 399,187.20 is: 598,885.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,240,615.20 : 1,861,246.80 = 399,187.20 : x
  2. Step 2: Convert to fraction form
    1,240,615.20/1,861,246.80 = 399,187.20/x
  3. Step 3: Cross multiply
    1,240,615.20x = 1,861,246.80 × 399,187.20
  4. Step 4: Simplify right side
    1,240,615.20x = 742,985,898,600.96
  5. Step 5: Solve for x
    x = 742,985,898,600.96/1,240,615.20
  6. Step 6: Final answer
    x = 598,885.05

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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.