Home / 1,211,213.80-1,816,820.70-369,656.20

Finding the Fourth Proportional to 1,211,213.80, 1,816,820.70 and 369,656.20

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Solution

The fourth proportional to 1,211,213.80, 1,816,820.70 and 369,656.20 is: 554,484.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,211,213.80 : 1,816,820.70 = 369,656.20 : x
  2. Step 2: Convert to fraction form
    1,211,213.80/1,816,820.70 = 369,656.20/x
  3. Step 3: Cross multiply
    1,211,213.80x = 1,816,820.70 × 369,656.20
  4. Step 4: Simplify right side
    1,211,213.80x = 671,599,036,043.34
  5. Step 5: Solve for x
    x = 671,599,036,043.34/1,211,213.80
  6. Step 6: Final answer
    x = 554,484.30

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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.