Finding the Fourth Proportional to 1,122,461,346.80, 1,683,692,020.20 and 709,212,825.20
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Solution
The fourth proportional to 1,122,461,346.80, 1,683,692,020.20 and 709,212,825.20 is: 1,063,819,237.80
Step by Step Solution
- Step 1: Write the proportion equation
1,122,461,346.80 : 1,683,692,020.20 = 709,212,825.20 : x - Step 2: Convert to fraction form
1,122,461,346.80/1,683,692,020.20 = 709,212,825.20/x - Step 3: Cross multiply
1,122,461,346.80x = 1,683,692,020.20 × 709,212,825.20 - Step 4: Simplify right side
1,122,461,346.80x = 1,194,095,974,412,737,536 - Step 5: Solve for x
x = 1,194,095,974,412,737,536/1,122,461,346.80 - Step 6: Final answer
x = 1,063,819,237.80
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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.