Home / 1,086,009,103.80-1,629,013,655.70-395,938,870.20

Finding the Fourth Proportional to 1,086,009,103.80, 1,629,013,655.70 and 395,938,870.20

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Solution

The fourth proportional to 1,086,009,103.80, 1,629,013,655.70 and 395,938,870.20 is: 593,908,305.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,086,009,103.80 : 1,629,013,655.70 = 395,938,870.20 : x
  2. Step 2: Convert to fraction form
    1,086,009,103.80/1,629,013,655.70 = 395,938,870.20/x
  3. Step 3: Cross multiply
    1,086,009,103.80x = 1,629,013,655.70 × 395,938,870.20
  4. Step 4: Simplify right side
    1,086,009,103.80x = 644,989,826,378,229,760
  5. Step 5: Solve for x
    x = 644,989,826,378,229,760/1,086,009,103.80
  6. Step 6: Final answer
    x = 593,908,305.30

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Double scale
Find fourth proportional to 1,086,009,104.80, 1,629,013,657.20 and 395,938,871.20
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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.