Finding the Fourth Proportional to 912,216,768.42, 1,258,869,062.17 and 535,889,217.68
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Solution
The fourth proportional to 912,216,768.42, 1,258,869,062.17 and 535,889,217.68 is: 739,532,949.01
Step by Step Solution
- Step 1: Write the proportion equation
912,216,768.42 : 1,258,869,062.17 = 535,889,217.68 : x - Step 2: Convert to fraction form
912,216,768.42/1,258,869,062.17 = 535,889,217.68/x - Step 3: Cross multiply
912,216,768.42x = 1,258,869,062.17 × 535,889,217.68 - Step 4: Simplify right side
912,216,768.42x = 674,614,356,887,836,672 - Step 5: Solve for x
x = 674,614,356,887,836,672/912,216,768.42 - Step 6: Final answer
x = 739,532,949.01
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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.