Finding the Fourth Proportional to 2,128,941,205.60, 3,193,411,808.40 and 1,211,646,920.80
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Solution
The fourth proportional to 2,128,941,205.60, 3,193,411,808.40 and 1,211,646,920.80 is: 1,817,470,381.20
Step by Step Solution
- Step 1: Write the proportion equation
2,128,941,205.60 : 3,193,411,808.40 = 1,211,646,920.80 : x - Step 2: Convert to fraction form
2,128,941,205.60/3,193,411,808.40 = 1,211,646,920.80/x - Step 3: Cross multiply
2,128,941,205.60x = 3,193,411,808.40 × 1,211,646,920.80 - Step 4: Simplify right side
2,128,941,205.60x = 3,869,287,584,494,219,776 - Step 5: Solve for x
x = 3,869,287,584,494,219,776/2,128,941,205.60 - Step 6: Final answer
x = 1,817,470,381.20
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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.