Finding the Fourth Proportional to 648,217,216.18, 894,539,802.06 and 354,861,784.18
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Solution
The fourth proportional to 648,217,216.18, 894,539,802.06 and 354,861,784.18 is: 489,709,286.11
Step by Step Solution
- Step 1: Write the proportion equation
648,217,216.18 : 894,539,802.06 = 354,861,784.18 : x - Step 2: Convert to fraction form
648,217,216.18/894,539,802.06 = 354,861,784.18/x - Step 3: Cross multiply
648,217,216.18x = 894,539,802.06 × 354,861,784.18 - Step 4: Simplify right side
648,217,216.18x = 317,437,990,179,035,648 - Step 5: Solve for x
x = 317,437,990,179,035,648/648,217,216.18 - Step 6: Final answer
x = 489,709,286.11
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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.