Finding the Fourth Proportional to 1,115,534,539.62, 1,671,362,639.64 and 782,835,939.90
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Solution
The fourth proportional to 1,115,534,539.62, 1,671,362,639.64 and 782,835,939.90 is: 1,172,893,080.80
Step by Step Solution
- Step 1: Write the proportion equation
1,115,534,539.62 : 1,671,362,639.64 = 782,835,939.90 : x - Step 2: Convert to fraction form
1,115,534,539.62/1,671,362,639.64 = 782,835,939.90/x - Step 3: Cross multiply
1,115,534,539.62x = 1,671,362,639.64 × 782,835,939.90 - Step 4: Simplify right side
1,115,534,539.62x = 1,308,402,742,916,324,352 - Step 5: Solve for x
x = 1,308,402,742,916,324,352/1,115,534,539.62 - Step 6: Final answer
x = 1,172,893,080.80
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.