Finding the Fourth Proportional to 687,903,352.59, 1,031,777,756.37 and 189,984,652.71
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Solution
The fourth proportional to 687,903,352.59, 1,031,777,756.37 and 189,984,652.71 is: 284,955,637.99
Step by Step Solution
- Step 1: Write the proportion equation
687,903,352.59 : 1,031,777,756.37 = 189,984,652.71 : x - Step 2: Convert to fraction form
687,903,352.59/1,031,777,756.37 = 189,984,652.71/x - Step 3: Cross multiply
687,903,352.59x = 1,031,777,756.37 × 189,984,652.71 - Step 4: Simplify right side
687,903,352.59x = 196,021,938,713,988,288 - Step 5: Solve for x
x = 196,021,938,713,988,288/687,903,352.59 - Step 6: Final answer
x = 284,955,637.99
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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.