Finding the Fourth Proportional to 757,511,531.32, 1,046,087,886.96 and 716,242,775.70
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Solution
The fourth proportional to 757,511,531.32, 1,046,087,886.96 and 716,242,775.70 is: 989,097,671.53
Step by Step Solution
- Step 1: Write the proportion equation
757,511,531.32 : 1,046,087,886.96 = 716,242,775.70 : x - Step 2: Convert to fraction form
757,511,531.32/1,046,087,886.96 = 716,242,775.70/x - Step 3: Cross multiply
757,511,531.32x = 1,046,087,886.96 × 716,242,775.70 - Step 4: Simplify right side
757,511,531.32x = 749,252,891,782,378,368 - Step 5: Solve for x
x = 749,252,891,782,378,368/757,511,531.32 - Step 6: Final answer
x = 989,097,671.53
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Double scale
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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.