Finding the Fourth Proportional to 1,379,071,029.20, 1,903,158,396.70 and 752,579,838.06
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Solution
The fourth proportional to 1,379,071,029.20, 1,903,158,396.70 and 752,579,838.06 is: 1,038,582,210.53
Step by Step Solution
- Step 1: Write the proportion equation
1,379,071,029.20 : 1,903,158,396.70 = 752,579,838.06 : x - Step 2: Convert to fraction form
1,379,071,029.20/1,903,158,396.70 = 752,579,838.06/x - Step 3: Cross multiply
1,379,071,029.20x = 1,903,158,396.70 × 752,579,838.06 - Step 4: Simplify right side
1,379,071,029.20x = 1,432,278,637,991,015,168 - Step 5: Solve for x
x = 1,432,278,637,991,015,168/1,379,071,029.20 - Step 6: Final answer
x = 1,038,582,210.53
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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.