Finding the Fourth Proportional to 1,318,334.36, 1,977,417.68 and 420,420.20
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Solution
The fourth proportional to 1,318,334.36, 1,977,417.68 and 420,420.20 is: 630,603.56
Step by Step Solution
- Step 1: Write the proportion equation
1,318,334.36 : 1,977,417.68 = 420,420.20 : x - Step 2: Convert to fraction form
1,318,334.36/1,977,417.68 = 420,420.20/x - Step 3: Cross multiply
1,318,334.36x = 1,977,417.68 × 420,420.20 - Step 4: Simplify right side
1,318,334.36x = 831,346,336,509.14 - Step 5: Solve for x
x = 831,346,336,509.14/1,318,334.36 - Step 6: Final answer
x = 630,603.56
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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.