Finding the Fourth Proportional to 2,130,353.28, 2,939,909.76 and 1,163,511.36
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Solution
The fourth proportional to 2,130,353.28, 2,939,909.76 and 1,163,511.36 is: 1,605,657.82
Step by Step Solution
- Step 1: Write the proportion equation
2,130,353.28 : 2,939,909.76 = 1,163,511.36 : x - Step 2: Convert to fraction form
2,130,353.28/2,939,909.76 = 1,163,511.36/x - Step 3: Cross multiply
2,130,353.28x = 2,939,909.76 × 1,163,511.36 - Step 4: Simplify right side
2,130,353.28x = 3,420,618,403,134.87 - Step 5: Solve for x
x = 3,420,618,403,134.87/2,130,353.28 - Step 6: Final answer
x = 1,605,657.82
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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.