Finding the Fourth Proportional to 553,075.25, 763,258.61 and 311,366.99
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Solution
The fourth proportional to 553,075.25, 763,258.61 and 311,366.99 is: 429,694.75
Step by Step Solution
- Step 1: Write the proportion equation
553,075.25 : 763,258.61 = 311,366.99 : x - Step 2: Convert to fraction form
553,075.25/763,258.61 = 311,366.99/x - Step 3: Cross multiply
553,075.25x = 763,258.61 × 311,366.99 - Step 4: Simplify right side
553,075.25x = 237,653,530,614.16 - Step 5: Solve for x
x = 237,653,530,614.16/553,075.25 - Step 6: Final answer
x = 429,694.75
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.