Finding the Fourth Proportional to 1,294,464,371.80, 1,941,696,557.70 and 432,821,363.80
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Solution
The fourth proportional to 1,294,464,371.80, 1,941,696,557.70 and 432,821,363.80 is: 649,232,045.70
Step by Step Solution
- Step 1: Write the proportion equation
1,294,464,371.80 : 1,941,696,557.70 = 432,821,363.80 : x - Step 2: Convert to fraction form
1,294,464,371.80/1,941,696,557.70 = 432,821,363.80/x - Step 3: Cross multiply
1,294,464,371.80x = 1,941,696,557.70 × 432,821,363.80 - Step 4: Simplify right side
1,294,464,371.80x = 840,407,752,189,479,424 - Step 5: Solve for x
x = 840,407,752,189,479,424/1,294,464,371.80 - Step 6: Final answer
x = 649,232,045.70
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Double scale
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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.