Finding the Fourth Proportional to 921,646.14, 1,271,898.63 and 539,637.18
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Solution
The fourth proportional to 921,646.14, 1,271,898.63 and 539,637.18 is: 744,715.09
Step by Step Solution
- Step 1: Write the proportion equation
921,646.14 : 1,271,898.63 = 539,637.18 : x - Step 2: Convert to fraction form
921,646.14/1,271,898.63 = 539,637.18/x - Step 3: Cross multiply
921,646.14x = 1,271,898.63 × 539,637.18 - Step 4: Simplify right side
921,646.14x = 686,363,789,939.06 - Step 5: Solve for x
x = 686,363,789,939.06/921,646.14 - Step 6: Final answer
x = 744,715.09
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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.