Finding the Fourth Proportional to 1,409,715,993.99, 1,945,294,183.64 and 815,038,801.63
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Solution
The fourth proportional to 1,409,715,993.99, 1,945,294,183.64 and 815,038,801.63 is: 1,124,687,700.93
Step by Step Solution
- Step 1: Write the proportion equation
1,409,715,993.99 : 1,945,294,183.64 = 815,038,801.63 : x - Step 2: Convert to fraction form
1,409,715,993.99/1,945,294,183.64 = 815,038,801.63/x - Step 3: Cross multiply
1,409,715,993.99x = 1,945,294,183.64 × 815,038,801.63 - Step 4: Simplify right side
1,409,715,993.99x = 1,585,490,240,248,929,280 - Step 5: Solve for x
x = 1,585,490,240,248,929,280/1,409,715,993.99 - Step 6: Final answer
x = 1,124,687,700.93
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1.5x scale
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.