Finding the Fourth Proportional to 1,235,219,427.63, 1,852,888,731.93 and 406,154,715.21
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Solution
The fourth proportional to 1,235,219,427.63, 1,852,888,731.93 and 406,154,715.21 is: 609,251,666.87
Step by Step Solution
- Step 1: Write the proportion equation
1,235,219,427.63 : 1,852,888,731.93 = 406,154,715.21 : x - Step 2: Convert to fraction form
1,235,219,427.63/1,852,888,731.93 = 406,154,715.21/x - Step 3: Cross multiply
1,235,219,427.63x = 1,852,888,731.93 × 406,154,715.21 - Step 4: Simplify right side
1,235,219,427.63x = 752,559,495,232,847,232 - Step 5: Solve for x
x = 752,559,495,232,847,232/1,235,219,427.63 - Step 6: Final answer
x = 609,251,666.87
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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.