Finding the Fourth Proportional to 1,688,638.05, 2,330,321.40 and 924,691.55
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Solution
The fourth proportional to 1,688,638.05, 2,330,321.40 and 924,691.55 is: 1,276,074.82
Step by Step Solution
- Step 1: Write the proportion equation
1,688,638.05 : 2,330,321.40 = 924,691.55 : x - Step 2: Convert to fraction form
1,688,638.05/2,330,321.40 = 924,691.55/x - Step 3: Cross multiply
1,688,638.05x = 2,330,321.40 × 924,691.55 - Step 4: Simplify right side
1,688,638.05x = 2,154,828,495,712.56 - Step 5: Solve for x
x = 2,154,828,495,712.56/1,688,638.05 - Step 6: Final answer
x = 1,276,074.82
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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.