Finding the Fourth Proportional to 885,146,975.20, 1,327,720,462.80 and 425,981,951.20
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Solution
The fourth proportional to 885,146,975.20, 1,327,720,462.80 and 425,981,951.20 is: 638,972,926.80
Step by Step Solution
- Step 1: Write the proportion equation
885,146,975.20 : 1,327,720,462.80 = 425,981,951.20 : x - Step 2: Convert to fraction form
885,146,975.20/1,327,720,462.80 = 425,981,951.20/x - Step 3: Cross multiply
885,146,975.20x = 1,327,720,462.80 × 425,981,951.20 - Step 4: Simplify right side
885,146,975.20x = 565,584,953,391,710,976 - Step 5: Solve for x
x = 565,584,953,391,710,976/885,146,975.20 - Step 6: Final answer
x = 638,972,926.80
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Double scale
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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.