Finding the Fourth Proportional to 448,103,310.90, 672,154,966.35 and 420,893,531.70
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Solution
The fourth proportional to 448,103,310.90, 672,154,966.35 and 420,893,531.70 is: 631,340,297.55
Step by Step Solution
- Step 1: Write the proportion equation
448,103,310.90 : 672,154,966.35 = 420,893,531.70 : x - Step 2: Convert to fraction form
448,103,310.90/672,154,966.35 = 420,893,531.70/x - Step 3: Cross multiply
448,103,310.90x = 672,154,966.35 × 420,893,531.70 - Step 4: Simplify right side
448,103,310.90x = 282,905,677,636,746,176 - Step 5: Solve for x
x = 282,905,677,636,746,176/448,103,310.90 - Step 6: Final answer
x = 631,340,297.55
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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.