Finding the Fourth Proportional to 7,868,402.71, 10,859,430.50 and 4,431,315.67
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Solution
The fourth proportional to 7,868,402.71, 10,859,430.50 and 4,431,315.67 is: 6,115,798.38
Step by Step Solution
- Step 1: Write the proportion equation
7,868,402.71 : 10,859,430.50 = 4,431,315.67 : x - Step 2: Convert to fraction form
7,868,402.71/10,859,430.50 = 4,431,315.67/x - Step 3: Cross multiply
7,868,402.71x = 10,859,430.50 × 4,431,315.67 - Step 4: Simplify right side
7,868,402.71x = 48,121,564,541,925.94 - Step 5: Solve for x
x = 48,121,564,541,925.94/7,868,402.71 - Step 6: Final answer
x = 6,115,798.38
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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.