Finding the Fourth Proportional to 999,312.27, 1,378,663.58 and 636,671.19
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Solution
The fourth proportional to 999,312.27, 1,378,663.58 and 636,671.19 is: 878,359.45
Step by Step Solution
- Step 1: Write the proportion equation
999,312.27 : 1,378,663.58 = 636,671.19 : x - Step 2: Convert to fraction form
999,312.27/1,378,663.58 = 636,671.19/x - Step 3: Cross multiply
999,312.27x = 1,378,663.58 × 636,671.19 - Step 4: Simplify right side
999,312.27x = 877,755,378,904.90 - Step 5: Solve for x
x = 877,755,378,904.90/999,312.27 - Step 6: Final answer
x = 878,359.45
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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.