Finding the Fourth Proportional to 442,138,830.70, 663,208,246.05 and 399,092,109.70
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Solution
The fourth proportional to 442,138,830.70, 663,208,246.05 and 399,092,109.70 is: 598,638,164.55
Step by Step Solution
- Step 1: Write the proportion equation
442,138,830.70 : 663,208,246.05 = 399,092,109.70 : x - Step 2: Convert to fraction form
442,138,830.70/663,208,246.05 = 399,092,109.70/x - Step 3: Cross multiply
442,138,830.70x = 663,208,246.05 × 399,092,109.70 - Step 4: Simplify right side
442,138,830.70x = 264,681,178,086,531,168 - Step 5: Solve for x
x = 264,681,178,086,531,168/442,138,830.70 - Step 6: Final answer
x = 598,638,164.55
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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.