Finding the Fourth Proportional to 644,370.07, 889,206.10 and 357,908.53
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Solution
The fourth proportional to 644,370.07, 889,206.10 and 357,908.53 is: 493,900.11
Step by Step Solution
- Step 1: Write the proportion equation
644,370.07 : 889,206.10 = 357,908.53 : x - Step 2: Convert to fraction form
644,370.07/889,206.10 = 357,908.53/x - Step 3: Cross multiply
644,370.07x = 889,206.10 × 357,908.53 - Step 4: Simplify right side
644,370.07x = 318,254,448,118.03 - Step 5: Solve for x
x = 318,254,448,118.03/644,370.07 - Step 6: Final answer
x = 493,900.11
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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.