Home / 1,289,870.40-1,933,423.20-490,843.20

Finding the Fourth Proportional to 1,289,870.40, 1,933,423.20 and 490,843.20

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Solution

The fourth proportional to 1,289,870.40, 1,933,423.20 and 490,843.20 is: 735,738.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,289,870.40 : 1,933,423.20 = 490,843.20 : x
  2. Step 2: Convert to fraction form
    1,289,870.40/1,933,423.20 = 490,843.20/x
  3. Step 3: Cross multiply
    1,289,870.40x = 1,933,423.20 × 490,843.20
  4. Step 4: Simplify right side
    1,289,870.40x = 949,007,630,442.24
  5. Step 5: Solve for x
    x = 949,007,630,442.24/1,289,870.40
  6. Step 6: Final answer
    x = 735,738.75

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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.