Finding the Fourth Proportional to 1,315,755,363.62, 1,972,237,374.93 and 615,657,647.54
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Solution
The fourth proportional to 1,315,755,363.62, 1,972,237,374.93 and 615,657,647.54 is: 922,833,420.42
Step by Step Solution
- Step 1: Write the proportion equation
1,315,755,363.62 : 1,972,237,374.93 = 615,657,647.54 : x - Step 2: Convert to fraction form
1,315,755,363.62/1,972,237,374.93 = 615,657,647.54/x - Step 3: Cross multiply
1,315,755,363.62x = 1,972,237,374.93 × 615,657,647.54 - Step 4: Simplify right side
1,315,755,363.62x = 1,214,223,022,639,868,672 - Step 5: Solve for x
x = 1,214,223,022,639,868,672/1,315,755,363.62 - Step 6: Final answer
x = 922,833,420.42
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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.