Finding the Fourth Proportional to 1,281,335,720.24, 1,921,809,382.49 and 348,731,242.18
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Solution
The fourth proportional to 1,281,335,720.24, 1,921,809,382.49 and 348,731,242.18 is: 523,044,009.93
Step by Step Solution
- Step 1: Write the proportion equation
1,281,335,720.24 : 1,921,809,382.49 = 348,731,242.18 : x - Step 2: Convert to fraction form
1,281,335,720.24/1,921,809,382.49 = 348,731,242.18/x - Step 3: Cross multiply
1,281,335,720.24x = 1,921,809,382.49 × 348,731,242.18 - Step 4: Simplify right side
1,281,335,720.24x = 670,194,973,184,983,808 - Step 5: Solve for x
x = 670,194,973,184,983,808/1,281,335,720.24 - Step 6: Final answer
x = 523,044,009.93
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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.