Home / 840,722.64-1,160,222.80-478,198.64

Finding the Fourth Proportional to 840,722.64, 1,160,222.80 and 478,198.64

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Solution

The fourth proportional to 840,722.64, 1,160,222.80 and 478,198.64 is: 659,928.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    840,722.64 : 1,160,222.80 = 478,198.64 : x
  2. Step 2: Convert to fraction form
    840,722.64/1,160,222.80 = 478,198.64/x
  3. Step 3: Cross multiply
    840,722.64x = 1,160,222.80 × 478,198.64
  4. Step 4: Simplify right side
    840,722.64x = 554,816,965,056.99
  5. Step 5: Solve for x
    x = 554,816,965,056.99/840,722.64
  6. Step 6: Final answer
    x = 659,928.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.