Finding the Fourth Proportional to 640,678,235.69, 884,142,924.17 and 376,371,368.75
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Solution
The fourth proportional to 640,678,235.69, 884,142,924.17 and 376,371,368.75 is: 519,396,576.94
Step by Step Solution
- Step 1: Write the proportion equation
640,678,235.69 : 884,142,924.17 = 376,371,368.75 : x - Step 2: Convert to fraction form
640,678,235.69/884,142,924.17 = 376,371,368.75/x - Step 3: Cross multiply
640,678,235.69x = 884,142,924.17 × 376,371,368.75 - Step 4: Simplify right side
640,678,235.69x = 332,766,082,534,187,776 - Step 5: Solve for x
x = 332,766,082,534,187,776/640,678,235.69 - Step 6: Final answer
x = 519,396,576.94
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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.