Finding the Fourth Proportional to 1,238,232.54, 1,708,036.95 and 778,619.70
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Solution
The fourth proportional to 1,238,232.54, 1,708,036.95 and 778,619.70 is: 1,074,039.95
Step by Step Solution
- Step 1: Write the proportion equation
1,238,232.54 : 1,708,036.95 = 778,619.70 : x - Step 2: Convert to fraction form
1,238,232.54/1,708,036.95 = 778,619.70/x - Step 3: Cross multiply
1,238,232.54x = 1,708,036.95 × 778,619.70 - Step 4: Simplify right side
1,238,232.54x = 1,329,911,217,597.91 - Step 5: Solve for x
x = 1,329,911,217,597.91/1,238,232.54 - Step 6: Final answer
x = 1,074,039.95
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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.