Finding the Fourth Proportional to 378,756,257.90, 523,044,621.09 and 358,121,878.88
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Solution
The fourth proportional to 378,756,257.90, 523,044,621.09 and 358,121,878.88 is: 494,549,511.82
Step by Step Solution
- Step 1: Write the proportion equation
378,756,257.90 : 523,044,621.09 = 358,121,878.88 : x - Step 2: Convert to fraction form
378,756,257.90/523,044,621.09 = 358,121,878.88/x - Step 3: Cross multiply
378,756,257.90x = 523,044,621.09 × 358,121,878.88 - Step 4: Simplify right side
378,756,257.90x = 187,313,722,442,828,448 - Step 5: Solve for x
x = 187,313,722,442,828,448/378,756,257.90 - Step 6: Final answer
x = 494,549,511.82
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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.