Finding the Fourth Proportional to 442,897,260.90, 664,345,891.35 and 420,726,329.70
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Solution
The fourth proportional to 442,897,260.90, 664,345,891.35 and 420,726,329.70 is: 631,089,494.55
Step by Step Solution
- Step 1: Write the proportion equation
442,897,260.90 : 664,345,891.35 = 420,726,329.70 : x - Step 2: Convert to fraction form
442,897,260.90/664,345,891.35 = 420,726,329.70/x - Step 3: Cross multiply
442,897,260.90x = 664,345,891.35 × 420,726,329.70 - Step 4: Simplify right side
442,897,260.90x = 279,507,808,518,960,480 - Step 5: Solve for x
x = 279,507,808,518,960,480/442,897,260.90 - Step 6: Final answer
x = 631,089,494.55
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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.