Finding the Fourth Proportional to 1,280,128.99, 1,766,631.68 and 736,264.93
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Solution
The fourth proportional to 1,280,128.99, 1,766,631.68 and 736,264.93 is: 1,016,076.47
Step by Step Solution
- Step 1: Write the proportion equation
1,280,128.99 : 1,766,631.68 = 736,264.93 : x - Step 2: Convert to fraction form
1,280,128.99/1,766,631.68 = 736,264.93/x - Step 3: Cross multiply
1,280,128.99x = 1,766,631.68 × 736,264.93 - Step 4: Simplify right side
1,280,128.99x = 1,300,708,950,210.98 - Step 5: Solve for x
x = 1,300,708,950,210.98/1,280,128.99 - Step 6: Final answer
x = 1,016,076.47
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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.