Finding the Fourth Proportional to 1,528,137.80, 2,292,206.70 and 390,897.80
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Solution
The fourth proportional to 1,528,137.80, 2,292,206.70 and 390,897.80 is: 586,346.70
Step by Step Solution
- Step 1: Write the proportion equation
1,528,137.80 : 2,292,206.70 = 390,897.80 : x - Step 2: Convert to fraction form
1,528,137.80/2,292,206.70 = 390,897.80/x - Step 3: Cross multiply
1,528,137.80x = 2,292,206.70 × 390,897.80 - Step 4: Simplify right side
1,528,137.80x = 896,018,556,175.26 - Step 5: Solve for x
x = 896,018,556,175.26/1,528,137.80 - Step 6: Final answer
x = 586,346.70
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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.