Finding the Fourth Proportional to 399,456,442.60, 599,184,663.90 and 278,424,557.80
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Solution
The fourth proportional to 399,456,442.60, 599,184,663.90 and 278,424,557.80 is: 417,636,836.70
Step by Step Solution
- Step 1: Write the proportion equation
399,456,442.60 : 599,184,663.90 = 278,424,557.80 : x - Step 2: Convert to fraction form
399,456,442.60/599,184,663.90 = 278,424,557.80/x - Step 3: Cross multiply
399,456,442.60x = 599,184,663.90 × 278,424,557.80 - Step 4: Simplify right side
399,456,442.60x = 166,827,725,086,899,136 - Step 5: Solve for x
x = 166,827,725,086,899,136/399,456,442.60 - Step 6: Final answer
x = 417,636,836.70
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.