Finding the Fourth Proportional to 669,403,751.58, 923,886,815.67 and 557,717,471.82
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Solution
The fourth proportional to 669,403,751.58, 923,886,815.67 and 557,717,471.82 is: 769,741,457.03
Step by Step Solution
- Step 1: Write the proportion equation
669,403,751.58 : 923,886,815.67 = 557,717,471.82 : x - Step 2: Convert to fraction form
669,403,751.58/923,886,815.67 = 557,717,471.82/x - Step 3: Cross multiply
669,403,751.58x = 923,886,815.67 × 557,717,471.82 - Step 4: Simplify right side
669,403,751.58x = 515,267,819,083,302,784 - Step 5: Solve for x
x = 515,267,819,083,302,784/669,403,751.58 - Step 6: Final answer
x = 769,741,457.03
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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.