Home / 919,105.20-1,378,657.80-682,909.20

Finding the Fourth Proportional to 919,105.20, 1,378,657.80 and 682,909.20

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Solution

The fourth proportional to 919,105.20, 1,378,657.80 and 682,909.20 is: 1,024,363.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,105.20 : 1,378,657.80 = 682,909.20 : x
  2. Step 2: Convert to fraction form
    919,105.20/1,378,657.80 = 682,909.20/x
  3. Step 3: Cross multiply
    919,105.20x = 1,378,657.80 × 682,909.20
  4. Step 4: Simplify right side
    919,105.20x = 941,498,095,271.76
  5. Step 5: Solve for x
    x = 941,498,095,271.76/919,105.20
  6. Step 6: Final answer
    x = 1,024,363.80

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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.