Finding the Fourth Proportional to 1,189,208.02, 1,641,108.18 and 679,921.06
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Solution
The fourth proportional to 1,189,208.02, 1,641,108.18 and 679,921.06 is: 938,291.70
Step by Step Solution
- Step 1: Write the proportion equation
1,189,208.02 : 1,641,108.18 = 679,921.06 : x - Step 2: Convert to fraction form
1,189,208.02/1,641,108.18 = 679,921.06/x - Step 3: Cross multiply
1,189,208.02x = 1,641,108.18 × 679,921.06 - Step 4: Simplify right side
1,189,208.02x = 1,115,824,013,320.27 - Step 5: Solve for x
x = 1,115,824,013,320.27/1,189,208.02 - Step 6: Final answer
x = 938,291.70
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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.