Finding the Fourth Proportional to 390,891,461.12, 586,336,857.60 and 99,758,561.12
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Solution
The fourth proportional to 390,891,461.12, 586,336,857.60 and 99,758,561.12 is: 149,637,756.42
Step by Step Solution
- Step 1: Write the proportion equation
390,891,461.12 : 586,336,857.60 = 99,758,561.12 : x - Step 2: Convert to fraction form
390,891,461.12/586,336,857.60 = 99,758,561.12/x - Step 3: Cross multiply
390,891,461.12x = 586,336,857.60 × 99,758,561.12 - Step 4: Simplify right side
390,891,461.12x = 58,492,121,245,798,344 - Step 5: Solve for x
x = 58,492,121,245,798,344/390,891,461.12 - Step 6: Final answer
x = 149,637,756.42
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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.