Finding the Fourth Proportional to 1,319,701.84, 1,979,587.16 and 421,142.36
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Solution
The fourth proportional to 1,319,701.84, 1,979,587.16 and 421,142.36 is: 631,724.52
Step by Step Solution
- Step 1: Write the proportion equation
1,319,701.84 : 1,979,587.16 = 421,142.36 : x - Step 2: Convert to fraction form
1,319,701.84/1,979,587.16 = 421,142.36/x - Step 3: Cross multiply
1,319,701.84x = 1,979,587.16 × 421,142.36 - Step 4: Simplify right side
1,319,701.84x = 833,688,008,388.10 - Step 5: Solve for x
x = 833,688,008,388.10/1,319,701.84 - Step 6: Final answer
x = 631,724.52
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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.