Finding the Fourth Proportional to 630,075.12, 869,472.27 and 358,107.09
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Solution
The fourth proportional to 630,075.12, 869,472.27 and 358,107.09 is: 494,169.94
Step by Step Solution
- Step 1: Write the proportion equation
630,075.12 : 869,472.27 = 358,107.09 : x - Step 2: Convert to fraction form
630,075.12/869,472.27 = 358,107.09/x - Step 3: Cross multiply
630,075.12x = 869,472.27 × 358,107.09 - Step 4: Simplify right side
630,075.12x = 311,364,184,445.39 - Step 5: Solve for x
x = 311,364,184,445.39/630,075.12 - Step 6: Final answer
x = 494,169.94
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1.5x scale
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.