Finding the Fourth Proportional to 898,657,497.90, 1,347,986,246.85 and 864,220,121.10
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Solution
The fourth proportional to 898,657,497.90, 1,347,986,246.85 and 864,220,121.10 is: 1,296,330,181.65
Step by Step Solution
- Step 1: Write the proportion equation
898,657,497.90 : 1,347,986,246.85 = 864,220,121.10 : x - Step 2: Convert to fraction form
898,657,497.90/1,347,986,246.85 = 864,220,121.10/x - Step 3: Cross multiply
898,657,497.90x = 1,347,986,246.85 × 864,220,121.10 - Step 4: Simplify right side
898,657,497.90x = 1,164,956,837,493,841,408 - Step 5: Solve for x
x = 1,164,956,837,493,841,408/898,657,497.90 - Step 6: Final answer
x = 1,296,330,181.65
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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.