Finding the Fourth Proportional to 620,909,983.79, 932,010,972.05 and 457,332,443.99
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Solution
The fourth proportional to 620,909,983.79, 932,010,972.05 and 457,332,443.99 is: 686,474,475.85
Step by Step Solution
- Step 1: Write the proportion equation
620,909,983.79 : 932,010,972.05 = 457,332,443.99 : x - Step 2: Convert to fraction form
620,909,983.79/932,010,972.05 = 457,332,443.99/x - Step 3: Cross multiply
620,909,983.79x = 932,010,972.05 × 457,332,443.99 - Step 4: Simplify right side
620,909,983.79x = 426,238,855,670,530,176 - Step 5: Solve for x
x = 426,238,855,670,530,176/620,909,983.79 - Step 6: Final answer
x = 686,474,475.85
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1.5x scale
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.