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Finding the Fourth Proportional to 691,290,692.80, 1,036,936,039.20 and 691,290,692.80

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Solution

The fourth proportional to 691,290,692.80, 1,036,936,039.20 and 691,290,692.80 is: 1,036,936,039.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,290,692.80 : 1,036,936,039.20 = 691,290,692.80 : x
  2. Step 2: Convert to fraction form
    691,290,692.80/1,036,936,039.20 = 691,290,692.80/x
  3. Step 3: Cross multiply
    691,290,692.80x = 1,036,936,039.20 × 691,290,692.80
  4. Step 4: Simplify right side
    691,290,692.80x = 716,824,232,927,856,000
  5. Step 5: Solve for x
    x = 716,824,232,927,856,000/691,290,692.80
  6. Step 6: Final answer
    x = 1,036,936,039.20

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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.