Finding the Fourth Proportional to 891,648,986.20, 1,337,473,479.30 and 673,970,752.60
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Solution
The fourth proportional to 891,648,986.20, 1,337,473,479.30 and 673,970,752.60 is: 1,010,956,128.90
Step by Step Solution
- Step 1: Write the proportion equation
891,648,986.20 : 1,337,473,479.30 = 673,970,752.60 : x - Step 2: Convert to fraction form
891,648,986.20/1,337,473,479.30 = 673,970,752.60/x - Step 3: Cross multiply
891,648,986.20x = 1,337,473,479.30 × 673,970,752.60 - Step 4: Simplify right side
891,648,986.20x = 901,418,007,426,361,472 - Step 5: Solve for x
x = 901,418,007,426,361,472/891,648,986.20 - Step 6: Final answer
x = 1,010,956,128.90
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.