Finding the Fourth Proportional to 387,973,674.15, 582,217,541.55 and 213,218,746.81
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Solution
The fourth proportional to 387,973,674.15, 582,217,541.55 and 213,218,746.81 is: 319,969,376.41
Step by Step Solution
- Step 1: Write the proportion equation
387,973,674.15 : 582,217,541.55 = 213,218,746.81 : x - Step 2: Convert to fraction form
387,973,674.15/582,217,541.55 = 213,218,746.81/x - Step 3: Cross multiply
387,973,674.15x = 582,217,541.55 × 213,218,746.81 - Step 4: Simplify right side
387,973,674.15x = 124,139,694,578,634,560 - Step 5: Solve for x
x = 124,139,694,578,634,560/387,973,674.15 - Step 6: Final answer
x = 319,969,376.41
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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.