Finding the Fourth Proportional to 660,694,125.02, 911,781,863.90 and 378,491,106.79
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Solution
The fourth proportional to 660,694,125.02, 911,781,863.90 and 378,491,106.79 is: 522,331,459.82
Step by Step Solution
- Step 1: Write the proportion equation
660,694,125.02 : 911,781,863.90 = 378,491,106.79 : x - Step 2: Convert to fraction form
660,694,125.02/911,781,863.90 = 378,491,106.79/x - Step 3: Cross multiply
660,694,125.02x = 911,781,863.90 × 378,491,106.79 - Step 4: Simplify right side
660,694,125.02x = 345,101,326,815,599,488 - Step 5: Solve for x
x = 345,101,326,815,599,488/660,694,125.02 - Step 6: Final answer
x = 522,331,459.82
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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.