Home / 1,879,868.40-2,819,802.60-1,242,139.20

Finding the Fourth Proportional to 1,879,868.40, 2,819,802.60 and 1,242,139.20

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Solution

The fourth proportional to 1,879,868.40, 2,819,802.60 and 1,242,139.20 is: 1,863,208.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,879,868.40 : 2,819,802.60 = 1,242,139.20 : x
  2. Step 2: Convert to fraction form
    1,879,868.40/2,819,802.60 = 1,242,139.20/x
  3. Step 3: Cross multiply
    1,879,868.40x = 2,819,802.60 × 1,242,139.20
  4. Step 4: Simplify right side
    1,879,868.40x = 3,502,587,345,721.92
  5. Step 5: Solve for x
    x = 3,502,587,345,721.92/1,879,868.40
  6. Step 6: Final answer
    x = 1,863,208.80

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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.