Finding the Fourth Proportional to 2,145,210,181.60, 3,217,815,272.40 and 1,165,658,130.40
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Solution
The fourth proportional to 2,145,210,181.60, 3,217,815,272.40 and 1,165,658,130.40 is: 1,748,487,195.60
Step by Step Solution
- Step 1: Write the proportion equation
2,145,210,181.60 : 3,217,815,272.40 = 1,165,658,130.40 : x - Step 2: Convert to fraction form
2,145,210,181.60/3,217,815,272.40 = 1,165,658,130.40/x - Step 3: Cross multiply
2,145,210,181.60x = 3,217,815,272.40 × 1,165,658,130.40 - Step 4: Simplify right side
2,145,210,181.60x = 3,750,872,534,398,351,360 - Step 5: Solve for x
x = 3,750,872,534,398,351,360/2,145,210,181.60 - Step 6: Final answer
x = 1,748,487,195.60
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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.