Finding the Fourth Proportional to 2,128,913.84, 2,937,462.54 and 1,223,320.88
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Solution
The fourth proportional to 2,128,913.84, 2,937,462.54 and 1,223,320.88 is: 1,687,930.81
Step by Step Solution
- Step 1: Write the proportion equation
2,128,913.84 : 2,937,462.54 = 1,223,320.88 : x - Step 2: Convert to fraction form
2,128,913.84/2,937,462.54 = 1,223,320.88/x - Step 3: Cross multiply
2,128,913.84x = 2,937,462.54 × 1,223,320.88 - Step 4: Simplify right side
2,128,913.84x = 3,593,459,262,156.04 - Step 5: Solve for x
x = 3,593,459,262,156.04/2,128,913.84 - Step 6: Final answer
x = 1,687,930.81
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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.