Home / 840,312.60-1,259,417.70-419,705.88

Finding the Fourth Proportional to 840,312.60, 1,259,417.70 and 419,705.88

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Solution

The fourth proportional to 840,312.60, 1,259,417.70 and 419,705.88 is: 629,033.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    840,312.60 : 1,259,417.70 = 419,705.88 : x
  2. Step 2: Convert to fraction form
    840,312.60/1,259,417.70 = 419,705.88/x
  3. Step 3: Cross multiply
    840,312.60x = 1,259,417.70 × 419,705.88
  4. Step 4: Simplify right side
    840,312.60x = 528,585,014,066.08
  5. Step 5: Solve for x
    x = 528,585,014,066.08/840,312.60
  6. Step 6: Final answer
    x = 629,033.78

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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.