Finding the Fourth Proportional to 1,319,405.80, 1,979,108.70 and 655,853.80
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Solution
The fourth proportional to 1,319,405.80, 1,979,108.70 and 655,853.80 is: 983,780.70
Step by Step Solution
- Step 1: Write the proportion equation
1,319,405.80 : 1,979,108.70 = 655,853.80 : x - Step 2: Convert to fraction form
1,319,405.80/1,979,108.70 = 655,853.80/x - Step 3: Cross multiply
1,319,405.80x = 1,979,108.70 × 655,853.80 - Step 4: Simplify right side
1,319,405.80x = 1,298,005,961,508.06 - Step 5: Solve for x
x = 1,298,005,961,508.06/1,319,405.80 - Step 6: Final answer
x = 983,780.70
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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.