Finding the Fourth Proportional to 403,402,421.20, 605,103,631.80 and 346,006,793.20
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Solution
The fourth proportional to 403,402,421.20, 605,103,631.80 and 346,006,793.20 is: 519,010,189.80
Step by Step Solution
- Step 1: Write the proportion equation
403,402,421.20 : 605,103,631.80 = 346,006,793.20 : x - Step 2: Convert to fraction form
403,402,421.20/605,103,631.80 = 346,006,793.20/x - Step 3: Cross multiply
403,402,421.20x = 605,103,631.80 × 346,006,793.20 - Step 4: Simplify right side
403,402,421.20x = 209,369,967,192,791,520 - Step 5: Solve for x
x = 209,369,967,192,791,520/403,402,421.20 - Step 6: Final answer
x = 519,010,189.80
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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.