Finding the Fourth Proportional to 1,188,789,710.81, 1,640,549,558.99 and 652,990,918.19
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Solution
The fourth proportional to 1,188,789,710.81, 1,640,549,558.99 and 652,990,918.19 is: 901,138,320.02
Step by Step Solution
- Step 1: Write the proportion equation
1,188,789,710.81 : 1,640,549,558.99 = 652,990,918.19 : x - Step 2: Convert to fraction form
1,188,789,710.81/1,640,549,558.99 = 652,990,918.19/x - Step 3: Cross multiply
1,188,789,710.81x = 1,640,549,558.99 × 652,990,918.19 - Step 4: Simplify right side
1,188,789,710.81x = 1,071,263,962,861,916,032 - Step 5: Solve for x
x = 1,071,263,962,861,916,032/1,188,789,710.81 - Step 6: Final answer
x = 901,138,320.02
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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.