Finding the Fourth Proportional to 1,643,721.65, 2,266,867.38 and 1,031,931.48
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Solution
The fourth proportional to 1,643,721.65, 2,266,867.38 and 1,031,931.48 is: 1,423,143.52
Step by Step Solution
- Step 1: Write the proportion equation
1,643,721.65 : 2,266,867.38 = 1,031,931.48 : x - Step 2: Convert to fraction form
1,643,721.65/2,266,867.38 = 1,031,931.48/x - Step 3: Cross multiply
1,643,721.65x = 2,266,867.38 × 1,031,931.48 - Step 4: Simplify right side
1,643,721.65x = 2,339,251,810,407.12 - Step 5: Solve for x
x = 2,339,251,810,407.12/1,643,721.65 - Step 6: Final answer
x = 1,423,143.52
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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.