Home / 1,245,311,518.95-1,868,439,056.86-747,669,557.60

Finding the Fourth Proportional to 1,245,311,518.95, 1,868,439,056.86 and 747,669,557.60

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Solution

The fourth proportional to 1,245,311,518.95, 1,868,439,056.86 and 747,669,557.60 is: 1,121,787,586.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,245,311,518.95 : 1,868,439,056.86 = 747,669,557.60 : x
  2. Step 2: Convert to fraction form
    1,245,311,518.95/1,868,439,056.86 = 747,669,557.60/x
  3. Step 3: Cross multiply
    1,245,311,518.95x = 1,868,439,056.86 × 747,669,557.60
  4. Step 4: Simplify right side
    1,245,311,518.95x = 1,396,975,003,041,339,136
  5. Step 5: Solve for x
    x = 1,396,975,003,041,339,136/1,245,311,518.95
  6. Step 6: Final answer
    x = 1,121,787,586.31

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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.