Home / 1,289,840.40-1,933,378.20-490,813.20

Finding the Fourth Proportional to 1,289,840.40, 1,933,378.20 and 490,813.20

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Solution

The fourth proportional to 1,289,840.40, 1,933,378.20 and 490,813.20 is: 735,693.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,289,840.40 : 1,933,378.20 = 490,813.20 : x
  2. Step 2: Convert to fraction form
    1,289,840.40/1,933,378.20 = 490,813.20/x
  3. Step 3: Cross multiply
    1,289,840.40x = 1,933,378.20 × 490,813.20
  4. Step 4: Simplify right side
    1,289,840.40x = 948,927,541,152.24
  5. Step 5: Solve for x
    x = 948,927,541,152.24/1,289,840.40
  6. Step 6: Final answer
    x = 735,693.77

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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.