Finding the Fourth Proportional to 1,087,317,326.08, 1,630,308,486.75 and 422,555,142.07
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Solution
The fourth proportional to 1,087,317,326.08, 1,630,308,486.75 and 422,555,142.07 is: 633,573,307.18
Step by Step Solution
- Step 1: Write the proportion equation
1,087,317,326.08 : 1,630,308,486.75 = 422,555,142.07 : x - Step 2: Convert to fraction form
1,087,317,326.08/1,630,308,486.75 = 422,555,142.07/x - Step 3: Cross multiply
1,087,317,326.08x = 1,630,308,486.75 × 422,555,142.07 - Step 4: Simplify right side
1,087,317,326.08x = 688,895,234,236,572,928 - Step 5: Solve for x
x = 688,895,234,236,572,928/1,087,317,326.08 - Step 6: Final answer
x = 633,573,307.18
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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.