Finding the Fourth Proportional to 841,640,939.55, 1,161,500,366.34 and 470,362,959.99
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Solution
The fourth proportional to 841,640,939.55, 1,161,500,366.34 and 470,362,959.99 is: 649,120,931.11
Step by Step Solution
- Step 1: Write the proportion equation
841,640,939.55 : 1,161,500,366.34 = 470,362,959.99 : x - Step 2: Convert to fraction form
841,640,939.55/1,161,500,366.34 = 470,362,959.99/x - Step 3: Cross multiply
841,640,939.55x = 1,161,500,366.34 × 470,362,959.99 - Step 4: Simplify right side
841,640,939.55x = 546,326,750,341,151,744 - Step 5: Solve for x
x = 546,326,750,341,151,744/841,640,939.55 - Step 6: Final answer
x = 649,120,931.11
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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.