Finding the Fourth Proportional to 401,918,552.80, 602,877,829.20 and 129,289,319.80
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Solution
The fourth proportional to 401,918,552.80, 602,877,829.20 and 129,289,319.80 is: 193,933,979.70
Step by Step Solution
- Step 1: Write the proportion equation
401,918,552.80 : 602,877,829.20 = 129,289,319.80 : x - Step 2: Convert to fraction form
401,918,552.80/602,877,829.20 = 129,289,319.80/x - Step 3: Cross multiply
401,918,552.80x = 602,877,829.20 × 129,289,319.80 - Step 4: Simplify right side
401,918,552.80x = 77,945,664,459,768,576 - Step 5: Solve for x
x = 77,945,664,459,768,576/401,918,552.80 - Step 6: Final answer
x = 193,933,979.70
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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.