Finding the Fourth Proportional to 528,106.98, 728,787.82 and 286,389.48
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Solution
The fourth proportional to 528,106.98, 728,787.82 and 286,389.48 is: 395,217.58
Step by Step Solution
- Step 1: Write the proportion equation
528,106.98 : 728,787.82 = 286,389.48 : x - Step 2: Convert to fraction form
528,106.98/728,787.82 = 286,389.48/x - Step 3: Cross multiply
528,106.98x = 728,787.82 × 286,389.48 - Step 4: Simplify right side
528,106.98x = 208,717,164,800.13 - Step 5: Solve for x
x = 208,717,164,800.13/528,106.98 - Step 6: Final answer
x = 395,217.58
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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.