Finding the Fourth Proportional to 917,998.90, 1,376,998.35 and 286,911.70
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Solution
The fourth proportional to 917,998.90, 1,376,998.35 and 286,911.70 is: 430,367.55
Step by Step Solution
- Step 1: Write the proportion equation
917,998.90 : 1,376,998.35 = 286,911.70 : x - Step 2: Convert to fraction form
917,998.90/1,376,998.35 = 286,911.70/x - Step 3: Cross multiply
917,998.90x = 1,376,998.35 × 286,911.70 - Step 4: Simplify right side
917,998.90x = 395,076,937,495.70 - Step 5: Solve for x
x = 395,076,937,495.70/917,998.90 - Step 6: Final answer
x = 430,367.55
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.