Finding the Fourth Proportional to 912,411.12, 1,368,649.80 and 313,368.78
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Solution
The fourth proportional to 912,411.12, 1,368,649.80 and 313,368.78 is: 470,064.55
Step by Step Solution
- Step 1: Write the proportion equation
912,411.12 : 1,368,649.80 = 313,368.78 : x - Step 2: Convert to fraction form
912,411.12/1,368,649.80 = 313,368.78/x - Step 3: Cross multiply
912,411.12x = 1,368,649.80 × 313,368.78 - Step 4: Simplify right side
912,411.12x = 428,892,118,073.24 - Step 5: Solve for x
x = 428,892,118,073.24/912,411.12 - Step 6: Final answer
x = 470,064.55
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.