Finding the Fourth Proportional to 1,421,037.20, 2,129,741.40 and 578,637.20
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Solution
The fourth proportional to 1,421,037.20, 2,129,741.40 and 578,637.20 is: 867,216.99
Step by Step Solution
- Step 1: Write the proportion equation
1,421,037.20 : 2,129,741.40 = 578,637.20 : x - Step 2: Convert to fraction form
1,421,037.20/2,129,741.40 = 578,637.20/x - Step 3: Cross multiply
1,421,037.20x = 2,129,741.40 × 578,637.20 - Step 4: Simplify right side
1,421,037.20x = 1,232,347,600,420.08 - Step 5: Solve for x
x = 1,232,347,600,420.08/1,421,037.20 - Step 6: Final answer
x = 867,216.99
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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.