Finding the Fourth Proportional to 787,253,118,860.40, 1,180,879,681,124.10 and 221,290,805,521.65
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Solution
The fourth proportional to 787,253,118,860.40, 1,180,879,681,124.10 and 221,290,805,521.65 is: 331,936,209,078.95
Step by Step Solution
- Step 1: Write the proportion equation
787,253,118,860.40 : 1,180,879,681,124.10 = 221,290,805,521.65 : x - Step 2: Convert to fraction form
787,253,118,860.40/1,180,879,681,124.10 = 221,290,805,521.65/x - Step 3: Cross multiply
787,253,118,860.40x = 1,180,879,681,124.10 × 221,290,805,521.65 - Step 4: Simplify right side
787,253,118,860.40x = 261,317,815,860,101,294,063,616 - Step 5: Solve for x
x = 261,317,815,860,101,294,063,616/787,253,118,860.40 - Step 6: Final answer
x = 331,936,209,078.95
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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.