Finding the Fourth Proportional to 985,041.12, 1,470,438.66 and 865,466.88
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Solution
The fourth proportional to 985,041.12, 1,470,438.66 and 865,466.88 is: 1,291,941.96
Step by Step Solution
- Step 1: Write the proportion equation
985,041.12 : 1,470,438.66 = 865,466.88 : x - Step 2: Convert to fraction form
985,041.12/1,470,438.66 = 865,466.88/x - Step 3: Cross multiply
985,041.12x = 1,470,438.66 × 865,466.88 - Step 4: Simplify right side
985,041.12x = 1,272,615,959,301.58 - Step 5: Solve for x
x = 1,272,615,959,301.58/985,041.12 - Step 6: Final answer
x = 1,291,941.96
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Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.