Finding the Fourth Proportional to 528,630.63, 729,510.95 and 286,913.18
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Solution
The fourth proportional to 528,630.63, 729,510.95 and 286,913.18 is: 395,940.55
Step by Step Solution
- Step 1: Write the proportion equation
528,630.63 : 729,510.95 = 286,913.18 : x - Step 2: Convert to fraction form
528,630.63/729,510.95 = 286,913.18/x - Step 3: Cross multiply
528,630.63x = 729,510.95 × 286,913.18 - Step 4: Simplify right side
528,630.63x = 209,306,303,579.05 - Step 5: Solve for x
x = 209,306,303,579.05/528,630.63 - Step 6: Final answer
x = 395,940.55
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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.