Finding the Fourth Proportional to 9,121,062,103.99, 12,587,584,373.96 and 5,106,697,252.79
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Solution
The fourth proportional to 9,121,062,103.99, 12,587,584,373.96 and 5,106,697,252.79 is: 7,047,532,601.89
Step by Step Solution
- Step 1: Write the proportion equation
9,121,062,103.99 : 12,587,584,373.96 = 5,106,697,252.79 : x - Step 2: Convert to fraction form
9,121,062,103.99/12,587,584,373.96 = 5,106,697,252.79/x - Step 3: Cross multiply
9,121,062,103.99x = 12,587,584,373.96 × 5,106,697,252.79 - Step 4: Simplify right side
9,121,062,103.99x = 64,280,982,541,675,388,928 - Step 5: Solve for x
x = 64,280,982,541,675,388,928/9,121,062,103.99 - Step 6: Final answer
x = 7,047,532,601.89
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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.