Finding the Fourth Proportional to 905,123.17, 1,249,029.57 and 542,746.99
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Solution
The fourth proportional to 905,123.17, 1,249,029.57 and 542,746.99 is: 748,966.62
Step by Step Solution
- Step 1: Write the proportion equation
905,123.17 : 1,249,029.57 = 542,746.99 : x - Step 2: Convert to fraction form
905,123.17/1,249,029.57 = 542,746.99/x - Step 3: Cross multiply
905,123.17x = 1,249,029.57 × 542,746.99 - Step 4: Simplify right side
905,123.17x = 677,907,039,538.49 - Step 5: Solve for x
x = 677,907,039,538.49/905,123.17 - Step 6: Final answer
x = 748,966.62
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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.