Finding the Fourth Proportional to 907,983,816.40, 1,361,975,724.60 and 688,445,539.30
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Solution
The fourth proportional to 907,983,816.40, 1,361,975,724.60 and 688,445,539.30 is: 1,032,668,308.95
Step by Step Solution
- Step 1: Write the proportion equation
907,983,816.40 : 1,361,975,724.60 = 688,445,539.30 : x - Step 2: Convert to fraction form
907,983,816.40/1,361,975,724.60 = 688,445,539.30/x - Step 3: Cross multiply
907,983,816.40x = 1,361,975,724.60 × 688,445,539.30 - Step 4: Simplify right side
907,983,816.40x = 937,646,112,235,755,136 - Step 5: Solve for x
x = 937,646,112,235,755,136/907,983,816.40 - Step 6: Final answer
x = 1,032,668,308.95
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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.