Finding the Fourth Proportional to 921,341.09, 1,271,451.95 and 513,434
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Solution
The fourth proportional to 921,341.09, 1,271,451.95 and 513,434 is: 708,539.61
Step by Step Solution
- Step 1: Write the proportion equation
921,341.09 : 1,271,451.95 = 513,434 : x - Step 2: Convert to fraction form
921,341.09/1,271,451.95 = 513,434/x - Step 3: Cross multiply
921,341.09x = 1,271,451.95 × 513,434 - Step 4: Simplify right side
921,341.09x = 652,806,657,929.13 - Step 5: Solve for x
x = 652,806,657,929.13/921,341.09 - Step 6: Final answer
x = 708,539.61
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1.5x scale
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.