Finding the Fourth Proportional to 7,148,686.79, 9,865,253.25 and 3,885,509.05
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Solution
The fourth proportional to 7,148,686.79, 9,865,253.25 and 3,885,509.05 is: 5,362,038.07
Step by Step Solution
- Step 1: Write the proportion equation
7,148,686.79 : 9,865,253.25 = 3,885,509.05 : x - Step 2: Convert to fraction form
7,148,686.79/9,865,253.25 = 3,885,509.05/x - Step 3: Cross multiply
7,148,686.79x = 9,865,253.25 × 3,885,509.05 - Step 4: Simplify right side
7,148,686.79x = 38,331,530,758,753.78 - Step 5: Solve for x
x = 38,331,530,758,753.78/7,148,686.79 - Step 6: Final answer
x = 5,362,038.07
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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.