Finding the Fourth Proportional to 927,590,947.47, 1,280,215,432.88 and 565,694,864.95
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Solution
The fourth proportional to 927,590,947.47, 1,280,215,432.88 and 565,694,864.95 is: 780,744,247.65
Step by Step Solution
- Step 1: Write the proportion equation
927,590,947.47 : 1,280,215,432.88 = 565,694,864.95 : x - Step 2: Convert to fraction form
927,590,947.47/1,280,215,432.88 = 565,694,864.95/x - Step 3: Cross multiply
927,590,947.47x = 1,280,215,432.88 × 565,694,864.95 - Step 4: Simplify right side
927,590,947.47x = 724,211,296,409,957,504 - Step 5: Solve for x
x = 724,211,296,409,957,504/927,590,947.47 - Step 6: Final answer
x = 780,744,247.65
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Double scale
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.