Finding the Fourth Proportional to 1,389,031,343.04, 1,916,813,657.14 and 786,189,022.94
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Solution
The fourth proportional to 1,389,031,343.04, 1,916,813,657.14 and 786,189,022.94 is: 1,084,912,780.27
Step by Step Solution
- Step 1: Write the proportion equation
1,389,031,343.04 : 1,916,813,657.14 = 786,189,022.94 : x - Step 2: Convert to fraction form
1,389,031,343.04/1,916,813,657.14 = 786,189,022.94/x - Step 3: Cross multiply
1,389,031,343.04x = 1,916,813,657.14 × 786,189,022.94 - Step 4: Simplify right side
1,389,031,343.04x = 1,506,977,856,264,944,896 - Step 5: Solve for x
x = 1,506,977,856,264,944,896/1,389,031,343.04 - Step 6: Final answer
x = 1,084,912,780.27
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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.