Finding the Fourth Proportional to 708,589,030.80, 1,062,883,546.20 and 643,965,805.20
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Solution
The fourth proportional to 708,589,030.80, 1,062,883,546.20 and 643,965,805.20 is: 965,948,707.80
Step by Step Solution
- Step 1: Write the proportion equation
708,589,030.80 : 1,062,883,546.20 = 643,965,805.20 : x - Step 2: Convert to fraction form
708,589,030.80/1,062,883,546.20 = 643,965,805.20/x - Step 3: Cross multiply
708,589,030.80x = 1,062,883,546.20 × 643,965,805.20 - Step 4: Simplify right side
708,589,030.80x = 684,460,658,662,514,432 - Step 5: Solve for x
x = 684,460,658,662,514,432/708,589,030.80 - Step 6: Final answer
x = 965,948,707.80
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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.