Finding the Fourth Proportional to 688,152,348.45, 949,651,976.61 and 374,888,844.99
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Solution
The fourth proportional to 688,152,348.45, 949,651,976.61 and 374,888,844.99 is: 517,347,551.68
Step by Step Solution
- Step 1: Write the proportion equation
688,152,348.45 : 949,651,976.61 = 374,888,844.99 : x - Step 2: Convert to fraction form
688,152,348.45/949,651,976.61 = 374,888,844.99/x - Step 3: Cross multiply
688,152,348.45x = 949,651,976.61 × 374,888,844.99 - Step 4: Simplify right side
688,152,348.45x = 356,013,932,653,793,408 - Step 5: Solve for x
x = 356,013,932,653,793,408/688,152,348.45 - Step 6: Final answer
x = 517,347,551.68
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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.