Finding the Fourth Proportional to 637,671,732.68, 879,966,163.86 and 402,847,419.08
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Solution
The fourth proportional to 637,671,732.68, 879,966,163.86 and 402,847,419.08 is: 555,916,280.78
Step by Step Solution
- Step 1: Write the proportion equation
637,671,732.68 : 879,966,163.86 = 402,847,419.08 : x - Step 2: Convert to fraction form
637,671,732.68/879,966,163.86 = 402,847,419.08/x - Step 3: Cross multiply
637,671,732.68x = 879,966,163.86 × 402,847,419.08 - Step 4: Simplify right side
637,671,732.68x = 354,492,097,988,729,344 - Step 5: Solve for x
x = 354,492,097,988,729,344/637,671,732.68 - Step 6: Final answer
x = 555,916,280.78
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.