Finding the Fourth Proportional to 1,140,351,070.96, 1,573,684,491.36 and 618,830,302.96
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Solution
The fourth proportional to 1,140,351,070.96, 1,573,684,491.36 and 618,830,302.96 is: 853,985,825.38
Step by Step Solution
- Step 1: Write the proportion equation
1,140,351,070.96 : 1,573,684,491.36 = 618,830,302.96 : x - Step 2: Convert to fraction form
1,140,351,070.96/1,573,684,491.36 = 618,830,302.96/x - Step 3: Cross multiply
1,140,351,070.96x = 1,573,684,491.36 × 618,830,302.96 - Step 4: Simplify right side
1,140,351,070.96x = 973,843,650,551,762,304 - Step 5: Solve for x
x = 973,843,650,551,762,304/1,140,351,070.96 - Step 6: Final answer
x = 853,985,825.38
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Double scale
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1.5x scale
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.