Finding the Fourth Proportional to 1,029,216.80, 1,420,393.98 and 621,417.84
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Solution
The fourth proportional to 1,029,216.80, 1,420,393.98 and 621,417.84 is: 857,601.78
Step by Step Solution
- Step 1: Write the proportion equation
1,029,216.80 : 1,420,393.98 = 621,417.84 : x - Step 2: Convert to fraction form
1,029,216.80/1,420,393.98 = 621,417.84/x - Step 3: Cross multiply
1,029,216.80x = 1,420,393.98 × 621,417.84 - Step 4: Simplify right side
1,029,216.80x = 882,658,159,000.60 - Step 5: Solve for x
x = 882,658,159,000.60/1,029,216.80 - Step 6: Final answer
x = 857,601.78
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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.