Finding the Fourth Proportional to 660,574,989.09, 990,207,984.33 and 310,193,840.34
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Solution
The fourth proportional to 660,574,989.09, 990,207,984.33 and 310,193,840.34 is: 464,983,419.70
Step by Step Solution
- Step 1: Write the proportion equation
660,574,989.09 : 990,207,984.33 = 310,193,840.34 : x - Step 2: Convert to fraction form
660,574,989.09/990,207,984.33 = 310,193,840.34/x - Step 3: Cross multiply
660,574,989.09x = 990,207,984.33 × 310,193,840.34 - Step 4: Simplify right side
660,574,989.09x = 307,156,417,394,653,248 - Step 5: Solve for x
x = 307,156,417,394,653,248/660,574,989.09 - Step 6: Final answer
x = 464,983,419.70
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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.