Finding the Fourth Proportional to 717,143,959.73, 989,632,536.23 and 399,587,798.09
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Solution
The fourth proportional to 717,143,959.73, 989,632,536.23 and 399,587,798.09 is: 551,416,602.91
Step by Step Solution
- Step 1: Write the proportion equation
717,143,959.73 : 989,632,536.23 = 399,587,798.09 : x - Step 2: Convert to fraction form
717,143,959.73/989,632,536.23 = 399,587,798.09/x - Step 3: Cross multiply
717,143,959.73x = 989,632,536.23 × 399,587,798.09 - Step 4: Simplify right side
717,143,959.73x = 395,445,086,068,369,920 - Step 5: Solve for x
x = 395,445,086,068,369,920/717,143,959.73 - Step 6: Final answer
x = 551,416,602.91
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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.