Finding the Fourth Proportional to 912,322,426.24, 1,259,031,502.02 and 515,836,898.92
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Solution
The fourth proportional to 912,322,426.24, 1,259,031,502.02 and 515,836,898.92 is: 711,869,934.32
Step by Step Solution
- Step 1: Write the proportion equation
912,322,426.24 : 1,259,031,502.02 = 515,836,898.92 : x - Step 2: Convert to fraction form
912,322,426.24/1,259,031,502.02 = 515,836,898.92/x - Step 3: Cross multiply
912,322,426.24x = 1,259,031,502.02 × 515,836,898.92 - Step 4: Simplify right side
912,322,426.24x = 649,454,905,644,586,496 - Step 5: Solve for x
x = 649,454,905,644,586,496/912,322,426.24 - Step 6: Final answer
x = 711,869,934.32
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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.