Finding the Fourth Proportional to 1,813,431,036.90, 2,720,146,555.35 and 664,424,393.70
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Solution
The fourth proportional to 1,813,431,036.90, 2,720,146,555.35 and 664,424,393.70 is: 996,636,590.55
Step by Step Solution
- Step 1: Write the proportion equation
1,813,431,036.90 : 2,720,146,555.35 = 664,424,393.70 : x - Step 2: Convert to fraction form
1,813,431,036.90/2,720,146,555.35 = 664,424,393.70/x - Step 3: Cross multiply
1,813,431,036.90x = 2,720,146,555.35 × 664,424,393.70 - Step 4: Simplify right side
1,813,431,036.90x = 1,807,331,725,813,567,232 - Step 5: Solve for x
x = 1,807,331,725,813,567,232/1,813,431,036.90 - Step 6: Final answer
x = 996,636,590.55
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1.5x scale
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.