Home / 1,211,320.40-1,816,980.60-369,870.80

Finding the Fourth Proportional to 1,211,320.40, 1,816,980.60 and 369,870.80

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Solution

The fourth proportional to 1,211,320.40, 1,816,980.60 and 369,870.80 is: 554,806.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,211,320.40 : 1,816,980.60 = 369,870.80 : x
  2. Step 2: Convert to fraction form
    1,211,320.40/1,816,980.60 = 369,870.80/x
  3. Step 3: Cross multiply
    1,211,320.40x = 1,816,980.60 × 369,870.80
  4. Step 4: Simplify right side
    1,211,320.40x = 672,048,068,106.48
  5. Step 5: Solve for x
    x = 672,048,068,106.48/1,211,320.40
  6. Step 6: Final answer
    x = 554,806.20

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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.