Finding the Fourth Proportional to 838,799,120.88, 1,258,505,488.36 and 390,316,405.44
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Solution
The fourth proportional to 838,799,120.88, 1,258,505,488.36 and 390,316,405.44 is: 585,617,373.95
Step by Step Solution
- Step 1: Write the proportion equation
838,799,120.88 : 1,258,505,488.36 = 390,316,405.44 : x - Step 2: Convert to fraction form
838,799,120.88/1,258,505,488.36 = 390,316,405.44/x - Step 3: Cross multiply
838,799,120.88x = 1,258,505,488.36 × 390,316,405.44 - Step 4: Simplify right side
838,799,120.88x = 491,215,338,443,186,944 - Step 5: Solve for x
x = 491,215,338,443,186,944/838,799,120.88 - Step 6: Final answer
x = 585,617,373.95
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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.