Finding the Fourth Proportional to 768,672,964.80, 1,153,009,447.20 and 732,960,129.60
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Solution
The fourth proportional to 768,672,964.80, 1,153,009,447.20 and 732,960,129.60 is: 1,099,440,194.40
Step by Step Solution
- Step 1: Write the proportion equation
768,672,964.80 : 1,153,009,447.20 = 732,960,129.60 : x - Step 2: Convert to fraction form
768,672,964.80/1,153,009,447.20 = 732,960,129.60/x - Step 3: Cross multiply
768,672,964.80x = 1,153,009,447.20 × 732,960,129.60 - Step 4: Simplify right side
768,672,964.80x = 845,109,953,849,736,448 - Step 5: Solve for x
x = 845,109,953,849,736,448/768,672,964.80 - Step 6: Final answer
x = 1,099,440,194.40
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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.