Finding the Fourth Proportional to 977,105,302.80, 1,465,657,954.20 and 931,755,670.80
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Solution
The fourth proportional to 977,105,302.80, 1,465,657,954.20 and 931,755,670.80 is: 1,397,633,506.20
Step by Step Solution
- Step 1: Write the proportion equation
977,105,302.80 : 1,465,657,954.20 = 931,755,670.80 : x - Step 2: Convert to fraction form
977,105,302.80/1,465,657,954.20 = 931,755,670.80/x - Step 3: Cross multiply
977,105,302.80x = 1,465,657,954.20 × 931,755,670.80 - Step 4: Simplify right side
977,105,302.80x = 1,365,635,110,278,976,768 - Step 5: Solve for x
x = 1,365,635,110,278,976,768/977,105,302.80 - Step 6: Final answer
x = 1,397,633,506.20
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Double scale
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Similar ratio
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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.