Finding the Fourth Proportional to 874,749,178.40, 1,207,156,029.84 and 478,297,778.72
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Solution
The fourth proportional to 874,749,178.40, 1,207,156,029.84 and 478,297,778.72 is: 660,052,117.68
Step by Step Solution
- Step 1: Write the proportion equation
874,749,178.40 : 1,207,156,029.84 = 478,297,778.72 : x - Step 2: Convert to fraction form
874,749,178.40/1,207,156,029.84 = 478,297,778.72/x - Step 3: Cross multiply
874,749,178.40x = 1,207,156,029.84 × 478,297,778.72 - Step 4: Simplify right side
874,749,178.40x = 577,380,047,640,926,080 - Step 5: Solve for x
x = 577,380,047,640,926,080/874,749,178.40 - Step 6: Final answer
x = 660,052,117.68
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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.