Finding the Fourth Proportional to 717,692,823.01, 990,415,943.09 and 387,667,965.25
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Solution
The fourth proportional to 717,692,823.01, 990,415,943.09 and 387,667,965.25 is: 534,981,709.58
Step by Step Solution
- Step 1: Write the proportion equation
717,692,823.01 : 990,415,943.09 = 387,667,965.25 : x - Step 2: Convert to fraction form
717,692,823.01/990,415,943.09 = 387,667,965.25/x - Step 3: Cross multiply
717,692,823.01x = 990,415,943.09 × 387,667,965.25 - Step 4: Simplify right side
717,692,823.01x = 383,952,533,408,860,096 - Step 5: Solve for x
x = 383,952,533,408,860,096/717,692,823.01 - Step 6: Final answer
x = 534,981,709.58
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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.