Finding the Fourth Proportional to 1,409,552,328.80, 2,114,328,493.20 and 489,332,712.80
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Solution
The fourth proportional to 1,409,552,328.80, 2,114,328,493.20 and 489,332,712.80 is: 733,999,069.20
Step by Step Solution
- Step 1: Write the proportion equation
1,409,552,328.80 : 2,114,328,493.20 = 489,332,712.80 : x - Step 2: Convert to fraction form
1,409,552,328.80/2,114,328,493.20 = 489,332,712.80/x - Step 3: Cross multiply
1,409,552,328.80x = 2,114,328,493.20 × 489,332,712.80 - Step 4: Simplify right side
1,409,552,328.80x = 1,034,610,097,327,892,352 - Step 5: Solve for x
x = 1,034,610,097,327,892,352/1,409,552,328.80 - Step 6: Final answer
x = 733,999,069.20
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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.