Finding the Fourth Proportional to 1,316,385.75, 1,974,578.63 and 319,113.75
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Solution
The fourth proportional to 1,316,385.75, 1,974,578.63 and 319,113.75 is: 478,670.63
Step by Step Solution
- Step 1: Write the proportion equation
1,316,385.75 : 1,974,578.63 = 319,113.75 : x - Step 2: Convert to fraction form
1,316,385.75/1,974,578.63 = 319,113.75/x - Step 3: Cross multiply
1,316,385.75x = 1,974,578.63 × 319,113.75 - Step 4: Simplify right side
1,316,385.75x = 630,115,189,693.59 - Step 5: Solve for x
x = 630,115,189,693.59/1,316,385.75 - Step 6: Final answer
x = 478,670.63
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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.