Finding the Fourth Proportional to 824,903,141.36, 1,138,387,909.68 and 448,581,738.74
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Solution
The fourth proportional to 824,903,141.36, 1,138,387,909.68 and 448,581,738.74 is: 619,054,531.71
Step by Step Solution
- Step 1: Write the proportion equation
824,903,141.36 : 1,138,387,909.68 = 448,581,738.74 : x - Step 2: Convert to fraction form
824,903,141.36/1,138,387,909.68 = 448,581,738.74/x - Step 3: Cross multiply
824,903,141.36x = 1,138,387,909.68 × 448,581,738.74 - Step 4: Simplify right side
824,903,141.36x = 510,660,027,879,156,608 - Step 5: Solve for x
x = 510,660,027,879,156,608/824,903,141.36 - Step 6: Final answer
x = 619,054,531.71
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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.