Finding the Fourth Proportional to 528,102.68, 728,781.86 and 286,385.18
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Solution
The fourth proportional to 528,102.68, 728,781.86 and 286,385.18 is: 395,211.64
Step by Step Solution
- Step 1: Write the proportion equation
528,102.68 : 728,781.86 = 286,385.18 : x - Step 2: Convert to fraction form
528,102.68/728,781.86 = 286,385.18/x - Step 3: Cross multiply
528,102.68x = 728,781.86 × 286,385.18 - Step 4: Simplify right side
528,102.68x = 208,712,324,156.84 - Step 5: Solve for x
x = 208,712,324,156.84/528,102.68 - Step 6: Final answer
x = 395,211.64
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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.