Finding the Fourth Proportional to 885,919,790.80, 1,328,879,686.20 and 425,746,997.20
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Solution
The fourth proportional to 885,919,790.80, 1,328,879,686.20 and 425,746,997.20 is: 638,620,495.80
Step by Step Solution
- Step 1: Write the proportion equation
885,919,790.80 : 1,328,879,686.20 = 425,746,997.20 : x - Step 2: Convert to fraction form
885,919,790.80/1,328,879,686.20 = 425,746,997.20/x - Step 3: Cross multiply
885,919,790.80x = 1,328,879,686.20 × 425,746,997.20 - Step 4: Simplify right side
885,919,790.80x = 565,766,536,039,728,256 - Step 5: Solve for x
x = 565,766,536,039,728,256/885,919,790.80 - Step 6: Final answer
x = 638,620,495.80
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1.5x scale
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.