Finding the Fourth Proportional to 818,129.61, 1,129,573.08 and 512,328.69
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Solution
The fourth proportional to 818,129.61, 1,129,573.08 and 512,328.69 is: 707,360.65
Step by Step Solution
- Step 1: Write the proportion equation
818,129.61 : 1,129,573.08 = 512,328.69 : x - Step 2: Convert to fraction form
818,129.61/1,129,573.08 = 512,328.69/x - Step 3: Cross multiply
818,129.61x = 1,129,573.08 × 512,328.69 - Step 4: Simplify right side
818,129.61x = 578,712,696,335.67 - Step 5: Solve for x
x = 578,712,696,335.67/818,129.61 - Step 6: Final answer
x = 707,360.65
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.