Finding the Fourth Proportional to 512,423,252.80, 768,634,879.20 and 487,340,987.20
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Solution
The fourth proportional to 512,423,252.80, 768,634,879.20 and 487,340,987.20 is: 731,011,480.80
Step by Step Solution
- Step 1: Write the proportion equation
512,423,252.80 : 768,634,879.20 = 487,340,987.20 : x - Step 2: Convert to fraction form
512,423,252.80/768,634,879.20 = 487,340,987.20/x - Step 3: Cross multiply
512,423,252.80x = 768,634,879.20 × 487,340,987.20 - Step 4: Simplify right side
512,423,252.80x = 374,587,280,825,680,768 - Step 5: Solve for x
x = 374,587,280,825,680,768/512,423,252.80 - Step 6: Final answer
x = 731,011,480.80
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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.