Finding the Fourth Proportional to 553,153.49, 763,366.07 and 311,444.58
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Solution
The fourth proportional to 553,153.49, 763,366.07 and 311,444.58 is: 429,801.55
Step by Step Solution
- Step 1: Write the proportion equation
553,153.49 : 763,366.07 = 311,444.58 : x - Step 2: Convert to fraction form
553,153.49/763,366.07 = 311,444.58/x - Step 3: Cross multiply
553,153.49x = 763,366.07 × 311,444.58 - Step 4: Simplify right side
553,153.49x = 237,746,223,500.18 - Step 5: Solve for x
x = 237,746,223,500.18/553,153.49 - Step 6: Final answer
x = 429,801.55
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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.