Finding the Fourth Proportional to 389,746.64, 538,366.74 and 313,552.71
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Solution
The fourth proportional to 389,746.64, 538,366.74 and 313,552.71 is: 433,118.17
Step by Step Solution
- Step 1: Write the proportion equation
389,746.64 : 538,366.74 = 313,552.71 : x - Step 2: Convert to fraction form
389,746.64/538,366.74 = 313,552.71/x - Step 3: Cross multiply
389,746.64x = 538,366.74 × 313,552.71 - Step 4: Simplify right side
389,746.64x = 168,806,350,300.87 - Step 5: Solve for x
x = 168,806,350,300.87/389,746.64 - Step 6: Final answer
x = 433,118.17
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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.