Finding the Fourth Proportional to 905,420.61, 1,249,407.31 and 523,471.99
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Solution
The fourth proportional to 905,420.61, 1,249,407.31 and 523,471.99 is: 722,349.06
Step by Step Solution
- Step 1: Write the proportion equation
905,420.61 : 1,249,407.31 = 523,471.99 : x - Step 2: Convert to fraction form
905,420.61/1,249,407.31 = 523,471.99/x - Step 3: Cross multiply
905,420.61x = 1,249,407.31 × 523,471.99 - Step 4: Simplify right side
905,420.61x = 654,029,730,886.25 - Step 5: Solve for x
x = 654,029,730,886.25/905,420.61 - Step 6: Final answer
x = 722,349.06
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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.