Finding the Fourth Proportional to 905,489.90, 1,249,303.57 and 542,781.42
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Solution
The fourth proportional to 905,489.90, 1,249,303.57 and 542,781.42 is: 748,875.02
Step by Step Solution
- Step 1: Write the proportion equation
905,489.90 : 1,249,303.57 = 542,781.42 : x - Step 2: Convert to fraction form
905,489.90/1,249,303.57 = 542,781.42/x - Step 3: Cross multiply
905,489.90x = 1,249,303.57 × 542,781.42 - Step 4: Simplify right side
905,489.90x = 678,098,765,735.67 - Step 5: Solve for x
x = 678,098,765,735.67/905,489.90 - Step 6: Final answer
x = 748,875.02
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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.