Finding the Fourth Proportional to 900,381,438.63, 1,242,656,879.76 and 518,829,242.29
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Solution
The fourth proportional to 900,381,438.63, 1,242,656,879.76 and 518,829,242.29 is: 716,059,549.53
Step by Step Solution
- Step 1: Write the proportion equation
900,381,438.63 : 1,242,656,879.76 = 518,829,242.29 : x - Step 2: Convert to fraction form
900,381,438.63/1,242,656,879.76 = 518,829,242.29/x - Step 3: Cross multiply
900,381,438.63x = 1,242,656,879.76 × 518,829,242.29 - Step 4: Simplify right side
900,381,438.63x = 644,726,727,349,229,824 - Step 5: Solve for x
x = 644,726,727,349,229,824/900,381,438.63 - Step 6: Final answer
x = 716,059,549.53
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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.