Finding the Fourth Proportional to 640,307.91, 883,637.58 and 349,937.44
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Solution
The fourth proportional to 640,307.91, 883,637.58 and 349,937.44 is: 482,920.59
Step by Step Solution
- Step 1: Write the proportion equation
640,307.91 : 883,637.58 = 349,937.44 : x - Step 2: Convert to fraction form
640,307.91/883,637.58 = 349,937.44/x - Step 3: Cross multiply
640,307.91x = 883,637.58 × 349,937.44 - Step 4: Simplify right side
640,307.91x = 309,217,872,633.00 - Step 5: Solve for x
x = 309,217,872,633.00/640,307.91 - Step 6: Final answer
x = 482,920.59
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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.