Home / 1,986,346.80-2,979,520.20-490,438.80

Finding the Fourth Proportional to 1,986,346.80, 2,979,520.20 and 490,438.80

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Solution

The fourth proportional to 1,986,346.80, 2,979,520.20 and 490,438.80 is: 735,658.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,986,346.80 : 2,979,520.20 = 490,438.80 : x
  2. Step 2: Convert to fraction form
    1,986,346.80/2,979,520.20 = 490,438.80/x
  3. Step 3: Cross multiply
    1,986,346.80x = 2,979,520.20 × 490,438.80
  4. Step 4: Simplify right side
    1,986,346.80x = 1,461,272,311,463.76
  5. Step 5: Solve for x
    x = 1,461,272,311,463.76/1,986,346.80
  6. Step 6: Final answer
    x = 735,658.20

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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.