Finding the Fourth Proportional to 1,489,483,541.97, 2,055,487,279.77 and 863,315,175.65
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Solution
The fourth proportional to 1,489,483,541.97, 2,055,487,279.77 and 863,315,175.65 is: 1,191,374,937.67
Step by Step Solution
- Step 1: Write the proportion equation
1,489,483,541.97 : 2,055,487,279.77 = 863,315,175.65 : x - Step 2: Convert to fraction form
1,489,483,541.97/2,055,487,279.77 = 863,315,175.65/x - Step 3: Cross multiply
1,489,483,541.97x = 2,055,487,279.77 × 863,315,175.65 - Step 4: Simplify right side
1,489,483,541.97x = 1,774,533,361,970,700,800 - Step 5: Solve for x
x = 1,774,533,361,970,700,800/1,489,483,541.97 - Step 6: Final answer
x = 1,191,374,937.67
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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.