Finding the Fourth Proportional to 866,641,661.93, 1,195,967,811.57 and 470,164,651.49
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Solution
The fourth proportional to 866,641,661.93, 1,195,967,811.57 and 470,164,651.49 is: 648,828,476.66
Step by Step Solution
- Step 1: Write the proportion equation
866,641,661.93 : 1,195,967,811.57 = 470,164,651.49 : x - Step 2: Convert to fraction form
866,641,661.93/1,195,967,811.57 = 470,164,651.49/x - Step 3: Cross multiply
866,641,661.93x = 1,195,967,811.57 × 470,164,651.49 - Step 4: Simplify right side
866,641,661.93x = 562,301,789,320,067,008 - Step 5: Solve for x
x = 562,301,789,320,067,008/866,641,661.93 - Step 6: Final answer
x = 648,828,476.66
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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.