Finding the Fourth Proportional to 398,721,681.23, 598,082,521.84 and 107,588,336.91
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Solution
The fourth proportional to 398,721,681.23, 598,082,521.84 and 107,588,336.91 is: 161,382,505.36
Step by Step Solution
- Step 1: Write the proportion equation
398,721,681.23 : 598,082,521.84 = 107,588,336.91 : x - Step 2: Convert to fraction form
398,721,681.23/598,082,521.84 = 107,588,336.91/x - Step 3: Cross multiply
398,721,681.23x = 598,082,521.84 × 107,588,336.91 - Step 4: Simplify right side
398,721,681.23x = 64,346,703,859,704,352 - Step 5: Solve for x
x = 64,346,703,859,704,352/398,721,681.23 - Step 6: Final answer
x = 161,382,505.36
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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.