Finding the Fourth Proportional to 1,130,330,515.74, 1,559,857,404.92 and 628,528,525.53
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Solution
The fourth proportional to 1,130,330,515.74, 1,559,857,404.92 and 628,528,525.53 is: 867,370,084.32
Step by Step Solution
- Step 1: Write the proportion equation
1,130,330,515.74 : 1,559,857,404.92 = 628,528,525.53 : x - Step 2: Convert to fraction form
1,130,330,515.74/1,559,857,404.92 = 628,528,525.53/x - Step 3: Cross multiply
1,130,330,515.74x = 1,559,857,404.92 × 628,528,525.53 - Step 4: Simplify right side
1,130,330,515.74x = 980,414,874,748,277,120 - Step 5: Solve for x
x = 980,414,874,748,277,120/1,130,330,515.74 - Step 6: Final answer
x = 867,370,084.32
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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.