Finding the Fourth Proportional to 406,473,078.80, 609,709,618.20 and 133,808,416.40
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Solution
The fourth proportional to 406,473,078.80, 609,709,618.20 and 133,808,416.40 is: 200,712,624.60
Step by Step Solution
- Step 1: Write the proportion equation
406,473,078.80 : 609,709,618.20 = 133,808,416.40 : x - Step 2: Convert to fraction form
406,473,078.80/609,709,618.20 = 133,808,416.40/x - Step 3: Cross multiply
406,473,078.80x = 609,709,618.20 × 133,808,416.40 - Step 4: Simplify right side
406,473,078.80x = 81,584,278,475,190,624 - Step 5: Solve for x
x = 81,584,278,475,190,624/406,473,078.80 - Step 6: Final answer
x = 200,712,624.60
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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.