Finding the Fourth Proportional to 879,856,209.12, 1,320,106,167.58 and 827,877,293.53
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Solution
The fourth proportional to 879,856,209.12, 1,320,106,167.58 and 827,877,293.53 is: 1,242,118,780.17
Step by Step Solution
- Step 1: Write the proportion equation
879,856,209.12 : 1,320,106,167.58 = 827,877,293.53 : x - Step 2: Convert to fraction form
879,856,209.12/1,320,106,167.58 = 827,877,293.53/x - Step 3: Cross multiply
879,856,209.12x = 1,320,106,167.58 × 827,877,293.53 - Step 4: Simplify right side
879,856,209.12x = 1,092,885,921,188,390,912 - Step 5: Solve for x
x = 1,092,885,921,188,390,912/879,856,209.12 - Step 6: Final answer
x = 1,242,118,780.17
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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.