Home / 840,367.04-1,260,550.72-279,406.40

Finding the Fourth Proportional to 840,367.04, 1,260,550.72 and 279,406.40

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Solution

The fourth proportional to 840,367.04, 1,260,550.72 and 279,406.40 is: 419,109.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    840,367.04 : 1,260,550.72 = 279,406.40 : x
  2. Step 2: Convert to fraction form
    840,367.04/1,260,550.72 = 279,406.40/x
  3. Step 3: Cross multiply
    840,367.04x = 1,260,550.72 × 279,406.40
  4. Step 4: Simplify right side
    840,367.04x = 352,205,938,692.61
  5. Step 5: Solve for x
    x = 352,205,938,692.61/840,367.04
  6. Step 6: Final answer
    x = 419,109.65

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1.5x scale

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.