Home / 1,211,080.40-1,816,620.60-369,630.80

Finding the Fourth Proportional to 1,211,080.40, 1,816,620.60 and 369,630.80

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Solution

The fourth proportional to 1,211,080.40, 1,816,620.60 and 369,630.80 is: 554,446.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,211,080.40 : 1,816,620.60 = 369,630.80 : x
  2. Step 2: Convert to fraction form
    1,211,080.40/1,816,620.60 = 369,630.80/x
  3. Step 3: Cross multiply
    1,211,080.40x = 1,816,620.60 × 369,630.80
  4. Step 4: Simplify right side
    1,211,080.40x = 671,478,925,674.48
  5. Step 5: Solve for x
    x = 671,478,925,674.48/1,211,080.40
  6. Step 6: Final answer
    x = 554,446.20

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Double scale
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Similar ratio
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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.