Finding the Fourth Proportional to 900,735.20, 1,243,005.36 and 498,330.08
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Solution
The fourth proportional to 900,735.20, 1,243,005.36 and 498,330.08 is: 687,690.41
Step by Step Solution
- Step 1: Write the proportion equation
900,735.20 : 1,243,005.36 = 498,330.08 : x - Step 2: Convert to fraction form
900,735.20/1,243,005.36 = 498,330.08/x - Step 3: Cross multiply
900,735.20x = 1,243,005.36 × 498,330.08 - Step 4: Simplify right side
900,735.20x = 619,426,960,489.23 - Step 5: Solve for x
x = 619,426,960,489.23/900,735.20 - Step 6: Final answer
x = 687,690.41
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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.