Finding the Fourth Proportional to 1,185,418,163.81, 1,778,130,277.09 and 300,103,618.10
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Solution
The fourth proportional to 1,185,418,163.81, 1,778,130,277.09 and 300,103,618.10 is: 450,156,194.57
Step by Step Solution
- Step 1: Write the proportion equation
1,185,418,163.81 : 1,778,130,277.09 = 300,103,618.10 : x - Step 2: Convert to fraction form
1,185,418,163.81/1,778,130,277.09 = 300,103,618.10/x - Step 3: Cross multiply
1,185,418,163.81x = 1,778,130,277.09 × 300,103,618.10 - Step 4: Simplify right side
1,185,418,163.81x = 533,623,329,598,223,680 - Step 5: Solve for x
x = 533,623,329,598,223,680/1,185,418,163.81 - Step 6: Final answer
x = 450,156,194.57
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1.5x scale
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.