Finding the Fourth Proportional to 870,912,201.40, 1,306,368,302.10 and 768,875,529.40
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Solution
The fourth proportional to 870,912,201.40, 1,306,368,302.10 and 768,875,529.40 is: 1,153,313,294.10
Step by Step Solution
- Step 1: Write the proportion equation
870,912,201.40 : 1,306,368,302.10 = 768,875,529.40 : x - Step 2: Convert to fraction form
870,912,201.40/1,306,368,302.10 = 768,875,529.40/x - Step 3: Cross multiply
870,912,201.40x = 1,306,368,302.10 × 768,875,529.40 - Step 4: Simplify right side
870,912,201.40x = 1,004,434,619,868,516,480 - Step 5: Solve for x
x = 1,004,434,619,868,516,480/870,912,201.40 - Step 6: Final answer
x = 1,153,313,294.10
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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.