Finding the Fourth Proportional to 885,912,230.80, 1,328,868,346.20 and 425,739,437.20
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Solution
The fourth proportional to 885,912,230.80, 1,328,868,346.20 and 425,739,437.20 is: 638,609,155.80
Step by Step Solution
- Step 1: Write the proportion equation
885,912,230.80 : 1,328,868,346.20 = 425,739,437.20 : x - Step 2: Convert to fraction form
885,912,230.80/1,328,868,346.20 = 425,739,437.20/x - Step 3: Cross multiply
885,912,230.80x = 1,328,868,346.20 × 425,739,437.20 - Step 4: Simplify right side
885,912,230.80x = 565,751,661,824,082,752 - Step 5: Solve for x
x = 565,751,661,824,082,752/885,912,230.80 - Step 6: Final answer
x = 638,609,155.80
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Double scale
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Similar ratio
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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.