Finding the Fourth Proportional to 1,681,656.40, 2,518,337.40 and 1,117,637.20
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Solution
The fourth proportional to 1,681,656.40, 2,518,337.40 and 1,117,637.20 is: 1,673,699.55
Step by Step Solution
- Step 1: Write the proportion equation
1,681,656.40 : 2,518,337.40 = 1,117,637.20 : x - Step 2: Convert to fraction form
1,681,656.40/2,518,337.40 = 1,117,637.20/x - Step 3: Cross multiply
1,681,656.40x = 2,518,337.40 × 1,117,637.20 - Step 4: Simplify right side
1,681,656.40x = 2,814,587,560,391.28 - Step 5: Solve for x
x = 2,814,587,560,391.28/1,681,656.40 - Step 6: Final answer
x = 1,673,699.55
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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.