Finding the Fourth Proportional to 639,697,499.48, 882,918,936.43 and 439,028,877.08
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Solution
The fourth proportional to 639,697,499.48, 882,918,936.43 and 439,028,877.08 is: 605,953,453.82
Step by Step Solution
- Step 1: Write the proportion equation
639,697,499.48 : 882,918,936.43 = 439,028,877.08 : x - Step 2: Convert to fraction form
639,697,499.48/882,918,936.43 = 439,028,877.08/x - Step 3: Cross multiply
639,697,499.48x = 882,918,936.43 × 439,028,877.08 - Step 4: Simplify right side
639,697,499.48x = 387,626,909,208,018,624 - Step 5: Solve for x
x = 387,626,909,208,018,624/639,697,499.48 - Step 6: Final answer
x = 605,953,453.82
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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.