Finding the Fourth Proportional to 424,980,859.41, 636,987,727.98 and 258,617,443.05
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Solution
The fourth proportional to 424,980,859.41, 636,987,727.98 and 258,617,443.05 is: 387,631,898.75
Step by Step Solution
- Step 1: Write the proportion equation
424,980,859.41 : 636,987,727.98 = 258,617,443.05 : x - Step 2: Convert to fraction form
424,980,859.41/636,987,727.98 = 258,617,443.05/x - Step 3: Cross multiply
424,980,859.41x = 636,987,727.98 × 258,617,443.05 - Step 4: Simplify right side
424,980,859.41x = 164,736,137,464,416,544 - Step 5: Solve for x
x = 164,736,137,464,416,544/424,980,859.41 - Step 6: Final answer
x = 387,631,898.75
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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.