Finding the Fourth Proportional to 1,036,424,433.20, 1,554,636,649.80 and 455,293,699.70
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Solution
The fourth proportional to 1,036,424,433.20, 1,554,636,649.80 and 455,293,699.70 is: 682,940,549.55
Step by Step Solution
- Step 1: Write the proportion equation
1,036,424,433.20 : 1,554,636,649.80 = 455,293,699.70 : x - Step 2: Convert to fraction form
1,036,424,433.20/1,554,636,649.80 = 455,293,699.70/x - Step 3: Cross multiply
1,036,424,433.20x = 1,554,636,649.80 × 455,293,699.70 - Step 4: Simplify right side
1,036,424,433.20x = 707,816,271,976,655,232 - Step 5: Solve for x
x = 707,816,271,976,655,232/1,036,424,433.20 - Step 6: Final answer
x = 682,940,549.55
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Double scale
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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.