Finding the Fourth Proportional to 1,316,385, 1,974,577.50 and 319,113
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Solution
The fourth proportional to 1,316,385, 1,974,577.50 and 319,113 is: 478,669.50
Step by Step Solution
- Step 1: Write the proportion equation
1,316,385 : 1,974,577.50 = 319,113 : x - Step 2: Convert to fraction form
1,316,385/1,974,577.50 = 319,113/x - Step 3: Cross multiply
1,316,385x = 1,974,577.50 × 319,113 - Step 4: Simplify right side
1,316,385x = 630,113,349,757.50 - Step 5: Solve for x
x = 630,113,349,757.50/1,316,385 - Step 6: Final answer
x = 478,669.50
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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.