Finding the Fourth Proportional to 663,848,513.97, 916,230,865.16 and 395,941,519.71
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Solution
The fourth proportional to 663,848,513.97, 916,230,865.16 and 395,941,519.71 is: 546,470,819.06
Step by Step Solution
- Step 1: Write the proportion equation
663,848,513.97 : 916,230,865.16 = 395,941,519.71 : x - Step 2: Convert to fraction form
663,848,513.97/916,230,865.16 = 395,941,519.71/x - Step 3: Cross multiply
663,848,513.97x = 916,230,865.16 × 395,941,519.71 - Step 4: Simplify right side
663,848,513.97x = 362,773,841,157,648,320 - Step 5: Solve for x
x = 362,773,841,157,648,320/663,848,513.97 - Step 6: Final answer
x = 546,470,819.06
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.