Home / 1,643,338,692.80-2,267,834,798.40-890,675,907.20

Finding the Fourth Proportional to 1,643,338,692.80, 2,267,834,798.40 and 890,675,907.20

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Solution

The fourth proportional to 1,643,338,692.80, 2,267,834,798.40 and 890,675,907.20 is: 1,229,147,603.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,643,338,692.80 : 2,267,834,798.40 = 890,675,907.20 : x
  2. Step 2: Convert to fraction form
    1,643,338,692.80/2,267,834,798.40 = 890,675,907.20/x
  3. Step 3: Cross multiply
    1,643,338,692.80x = 2,267,834,798.40 × 890,675,907.20
  4. Step 4: Simplify right side
    1,643,338,692.80x = 2,019,905,816,444,649,216
  5. Step 5: Solve for x
    x = 2,019,905,816,444,649,216/1,643,338,692.80
  6. Step 6: Final answer
    x = 1,229,147,603.77

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.