Finding the Fourth Proportional to 2,201,931.98, 3,038,691.64 and 1,221,891.12
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Solution
The fourth proportional to 2,201,931.98, 3,038,691.64 and 1,221,891.12 is: 1,686,223.90
Step by Step Solution
- Step 1: Write the proportion equation
2,201,931.98 : 3,038,691.64 = 1,221,891.12 : x - Step 2: Convert to fraction form
2,201,931.98/3,038,691.64 = 1,221,891.12/x - Step 3: Cross multiply
2,201,931.98x = 3,038,691.64 × 1,221,891.12 - Step 4: Simplify right side
2,201,931.98x = 3,712,950,331,334.24 - Step 5: Solve for x
x = 3,712,950,331,334.24/2,201,931.98 - Step 6: Final answer
x = 1,686,223.90
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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.