Finding the Fourth Proportional to 1,221,420.18, 1,832,256.15 and 422,700.42
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Solution
The fourth proportional to 1,221,420.18, 1,832,256.15 and 422,700.42 is: 634,094.19
Step by Step Solution
- Step 1: Write the proportion equation
1,221,420.18 : 1,832,256.15 = 422,700.42 : x - Step 2: Convert to fraction form
1,221,420.18/1,832,256.15 = 422,700.42/x - Step 3: Cross multiply
1,221,420.18x = 1,832,256.15 × 422,700.42 - Step 4: Simplify right side
1,221,420.18x = 774,495,444,152.58 - Step 5: Solve for x
x = 774,495,444,152.58/1,221,420.18 - Step 6: Final answer
x = 634,094.19
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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.