Finding the Fourth Proportional to 918,331.80, 1,377,497.70 and 664,421.10
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Solution
The fourth proportional to 918,331.80, 1,377,497.70 and 664,421.10 is: 996,631.65
Step by Step Solution
- Step 1: Write the proportion equation
918,331.80 : 1,377,497.70 = 664,421.10 : x - Step 2: Convert to fraction form
918,331.80/1,377,497.70 = 664,421.10/x - Step 3: Cross multiply
918,331.80x = 1,377,497.70 × 664,421.10 - Step 4: Simplify right side
918,331.80x = 915,238,537,081.47 - Step 5: Solve for x
x = 915,238,537,081.47/918,331.80 - Step 6: Final answer
x = 996,631.65
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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.