Finding the Fourth Proportional to 879,965,450.07, 1,214,051,988.09 and 545,315,869.17
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Solution
The fourth proportional to 879,965,450.07, 1,214,051,988.09 and 545,315,869.17 is: 752,349,782.65
Step by Step Solution
- Step 1: Write the proportion equation
879,965,450.07 : 1,214,051,988.09 = 545,315,869.17 : x - Step 2: Convert to fraction form
879,965,450.07/1,214,051,988.09 = 545,315,869.17/x - Step 3: Cross multiply
879,965,450.07x = 1,214,051,988.09 × 545,315,869.17 - Step 4: Simplify right side
879,965,450.07x = 662,041,815,102,864,768 - Step 5: Solve for x
x = 662,041,815,102,864,768/879,965,450.07 - Step 6: Final answer
x = 752,349,782.65
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1.5x scale
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.