Finding the Fourth Proportional to 2,257,708.24, 3,115,645.52 and 1,225,215.80
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Solution
The fourth proportional to 2,257,708.24, 3,115,645.52 and 1,225,215.80 is: 1,690,802.23
Step by Step Solution
- Step 1: Write the proportion equation
2,257,708.24 : 3,115,645.52 = 1,225,215.80 : x - Step 2: Convert to fraction form
2,257,708.24/3,115,645.52 = 1,225,215.80/x - Step 3: Cross multiply
2,257,708.24x = 3,115,645.52 × 1,225,215.80 - Step 4: Simplify right side
2,257,708.24x = 3,817,338,118,303.22 - Step 5: Solve for x
x = 3,817,338,118,303.22/2,257,708.24 - Step 6: Final answer
x = 1,690,802.23
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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.