Finding the Fourth Proportional to 1,290,655.67, 1,781,148.04 and 709,903.36
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Solution
The fourth proportional to 1,290,655.67, 1,781,148.04 and 709,903.36 is: 979,690.40
Step by Step Solution
- Step 1: Write the proportion equation
1,290,655.67 : 1,781,148.04 = 709,903.36 : x - Step 2: Convert to fraction form
1,290,655.67/1,781,148.04 = 709,903.36/x - Step 3: Cross multiply
1,290,655.67x = 1,781,148.04 × 709,903.36 - Step 4: Simplify right side
1,290,655.67x = 1,264,442,974,703.90 - Step 5: Solve for x
x = 1,264,442,974,703.90/1,290,655.67 - Step 6: Final answer
x = 979,690.40
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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.