Finding the Fourth Proportional to 915,128,119.35, 1,262,877,618.47 and 497,440,404.65
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Solution
The fourth proportional to 915,128,119.35, 1,262,877,618.47 and 497,440,404.65 is: 686,468,200.76
Step by Step Solution
- Step 1: Write the proportion equation
915,128,119.35 : 1,262,877,618.47 = 497,440,404.65 : x - Step 2: Convert to fraction form
915,128,119.35/1,262,877,618.47 = 497,440,404.65/x - Step 3: Cross multiply
915,128,119.35x = 1,262,877,618.47 × 497,440,404.65 - Step 4: Simplify right side
915,128,119.35x = 628,206,353,555,815,040 - Step 5: Solve for x
x = 628,206,353,555,815,040/915,128,119.35 - Step 6: Final answer
x = 686,468,200.76
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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.