Finding the Fourth Proportional to 1,091,536,296.21, 1,506,320,088.84 and 621,681,336.63
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Solution
The fourth proportional to 1,091,536,296.21, 1,506,320,088.84 and 621,681,336.63 is: 857,920,244.59
Step by Step Solution
- Step 1: Write the proportion equation
1,091,536,296.21 : 1,506,320,088.84 = 621,681,336.63 : x - Step 2: Convert to fraction form
1,091,536,296.21/1,506,320,088.84 = 621,681,336.63/x - Step 3: Cross multiply
1,091,536,296.21x = 1,506,320,088.84 × 621,681,336.63 - Step 4: Simplify right side
1,091,536,296.21x = 936,451,086,222,671,488 - Step 5: Solve for x
x = 936,451,086,222,671,488/1,091,536,296.21 - Step 6: Final answer
x = 857,920,244.59
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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.