Finding the Fourth Proportional to 770,031.99, 1,149,408 and 679,130.55
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Solution
The fourth proportional to 770,031.99, 1,149,408 and 679,130.55 is: 1,013,721.63
Step by Step Solution
- Step 1: Write the proportion equation
770,031.99 : 1,149,408 = 679,130.55 : x - Step 2: Convert to fraction form
770,031.99/1,149,408 = 679,130.55/x - Step 3: Cross multiply
770,031.99x = 1,149,408 × 679,130.55 - Step 4: Simplify right side
770,031.99x = 780,598,087,214.40 - Step 5: Solve for x
x = 780,598,087,214.40/770,031.99 - Step 6: Final answer
x = 1,013,721.63
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.