Finding the Fourth Proportional to 885,718,376.80, 1,328,577,565.20 and 516,874,703.20
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Solution
The fourth proportional to 885,718,376.80, 1,328,577,565.20 and 516,874,703.20 is: 775,312,054.80
Step by Step Solution
- Step 1: Write the proportion equation
885,718,376.80 : 1,328,577,565.20 = 516,874,703.20 : x - Step 2: Convert to fraction form
885,718,376.80/1,328,577,565.20 = 516,874,703.20/x - Step 3: Cross multiply
885,718,376.80x = 1,328,577,565.20 × 516,874,703.20 - Step 4: Simplify right side
885,718,376.80x = 686,708,134,690,928,640 - Step 5: Solve for x
x = 686,708,134,690,928,640/885,718,376.80 - Step 6: Final answer
x = 775,312,054.80
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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.