Finding the Fourth Proportional to 387,686,228.44, 581,534,408.02 and 128,901,448.76
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Solution
The fourth proportional to 387,686,228.44, 581,534,408.02 and 128,901,448.76 is: 193,353,857.32
Step by Step Solution
- Step 1: Write the proportion equation
387,686,228.44 : 581,534,408.02 = 128,901,448.76 : x - Step 2: Convert to fraction form
387,686,228.44/581,534,408.02 = 128,901,448.76/x - Step 3: Cross multiply
387,686,228.44x = 581,534,408.02 × 128,901,448.76 - Step 4: Simplify right side
387,686,228.44x = 74,960,627,697,566,960 - Step 5: Solve for x
x = 74,960,627,697,566,960/387,686,228.44 - Step 6: Final answer
x = 193,353,857.32
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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.