Finding the Fourth Proportional to 2,130,421.52, 2,939,936.14 and 1,163,555.70
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Solution
The fourth proportional to 2,130,421.52, 2,939,936.14 and 1,163,555.70 is: 1,605,681.98
Step by Step Solution
- Step 1: Write the proportion equation
2,130,421.52 : 2,939,936.14 = 1,163,555.70 : x - Step 2: Convert to fraction form
2,130,421.52/2,939,936.14 = 1,163,555.70/x - Step 3: Cross multiply
2,130,421.52x = 2,939,936.14 × 1,163,555.70 - Step 4: Simplify right side
2,130,421.52x = 3,420,779,453,333.00 - Step 5: Solve for x
x = 3,420,779,453,333.00/2,130,421.52 - Step 6: Final answer
x = 1,605,681.98
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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.