Finding the Fourth Proportional to 1,316,342.70, 1,974,514.05 and 319,070.70
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Solution
The fourth proportional to 1,316,342.70, 1,974,514.05 and 319,070.70 is: 478,606.05
Step by Step Solution
- Step 1: Write the proportion equation
1,316,342.70 : 1,974,514.05 = 319,070.70 : x - Step 2: Convert to fraction form
1,316,342.70/1,974,514.05 = 319,070.70/x - Step 3: Cross multiply
1,316,342.70x = 1,974,514.05 × 319,070.70 - Step 4: Simplify right side
1,316,342.70x = 630,009,580,093.34 - Step 5: Solve for x
x = 630,009,580,093.34/1,316,342.70 - Step 6: Final answer
x = 478,606.05
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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.