Finding the Fourth Proportional to 717,697,266.28, 990,422,625.54 and 387,672,407.08
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Solution
The fourth proportional to 717,697,266.28, 990,422,625.54 and 387,672,407.08 is: 534,988,136.79
Step by Step Solution
- Step 1: Write the proportion equation
717,697,266.28 : 990,422,625.54 = 387,672,407.08 : x - Step 2: Convert to fraction form
717,697,266.28/990,422,625.54 = 387,672,407.08/x - Step 3: Cross multiply
717,697,266.28x = 990,422,625.54 × 387,672,407.08 - Step 4: Simplify right side
717,697,266.28x = 383,959,523,269,585,280 - Step 5: Solve for x
x = 383,959,523,269,585,280/717,697,266.28 - Step 6: Final answer
x = 534,988,136.79
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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.