Home / 2,628,288,139.20-3,942,432,208.80-1,338,343,051.20

Finding the Fourth Proportional to 2,628,288,139.20, 3,942,432,208.80 and 1,338,343,051.20

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Solution

The fourth proportional to 2,628,288,139.20, 3,942,432,208.80 and 1,338,343,051.20 is: 2,007,514,576.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,628,288,139.20 : 3,942,432,208.80 = 1,338,343,051.20 : x
  2. Step 2: Convert to fraction form
    2,628,288,139.20/3,942,432,208.80 = 1,338,343,051.20/x
  3. Step 3: Cross multiply
    2,628,288,139.20x = 3,942,432,208.80 × 1,338,343,051.20
  4. Step 4: Simplify right side
    2,628,288,139.20x = 5,276,326,751,474,547,712
  5. Step 5: Solve for x
    x = 5,276,326,751,474,547,712/2,628,288,139.20
  6. Step 6: Final answer
    x = 2,007,514,576.80

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Double scale
Find fourth proportional to 2,628,288,140.20, 3,942,432,210.30 and 1,338,343,052.20
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.