Finding the Fourth Proportional to 690,571,497.12, 952,977,403.98 and 377,298,968.64
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Solution
The fourth proportional to 690,571,497.12, 952,977,403.98 and 377,298,968.64 is: 520,666,423.62
Step by Step Solution
- Step 1: Write the proportion equation
690,571,497.12 : 952,977,403.98 = 377,298,968.64 : x - Step 2: Convert to fraction form
690,571,497.12/952,977,403.98 = 377,298,968.64/x - Step 3: Cross multiply
690,571,497.12x = 952,977,403.98 × 377,298,968.64 - Step 4: Simplify right side
690,571,497.12x = 359,557,391,658,878,656 - Step 5: Solve for x
x = 359,557,391,658,878,656/690,571,497.12 - Step 6: Final answer
x = 520,666,423.62
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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.