Finding the Fourth Proportional to 518,207,395.81, 715,126,153.41 and 283,258,994.57
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Solution
The fourth proportional to 518,207,395.81, 715,126,153.41 and 283,258,994.57 is: 390,897,383.63
Step by Step Solution
- Step 1: Write the proportion equation
518,207,395.81 : 715,126,153.41 = 283,258,994.57 : x - Step 2: Convert to fraction form
518,207,395.81/715,126,153.41 = 283,258,994.57/x - Step 3: Cross multiply
518,207,395.81x = 715,126,153.41 × 283,258,994.57 - Step 4: Simplify right side
518,207,395.81x = 202,565,915,200,636,256 - Step 5: Solve for x
x = 202,565,915,200,636,256/518,207,395.81 - Step 6: Final answer
x = 390,897,383.63
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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.