Finding the Fourth Proportional to 318,877,442.63, 478,316,169.51 and 76,540,346.63
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Solution
The fourth proportional to 318,877,442.63, 478,316,169.51 and 76,540,346.63 is: 114,810,521.28
Step by Step Solution
- Step 1: Write the proportion equation
318,877,442.63 : 478,316,169.51 = 76,540,346.63 : x - Step 2: Convert to fraction form
318,877,442.63/478,316,169.51 = 76,540,346.63/x - Step 3: Cross multiply
318,877,442.63x = 478,316,169.51 × 76,540,346.63 - Step 4: Simplify right side
318,877,442.63x = 36,610,485,413,029,232 - Step 5: Solve for x
x = 36,610,485,413,029,232/318,877,442.63 - Step 6: Final answer
x = 114,810,521.28
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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.