Finding the Fourth Proportional to 665,358,399.08, 918,228,987.84 and 383,142,728.60
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Solution
The fourth proportional to 665,358,399.08, 918,228,987.84 and 383,142,728.60 is: 528,756,772.84
Step by Step Solution
- Step 1: Write the proportion equation
665,358,399.08 : 918,228,987.84 = 383,142,728.60 : x - Step 2: Convert to fraction form
665,358,399.08/918,228,987.84 = 383,142,728.60/x - Step 3: Cross multiply
665,358,399.08x = 918,228,987.84 × 383,142,728.60 - Step 4: Simplify right side
665,358,399.08x = 351,812,759,880,633,856 - Step 5: Solve for x
x = 351,812,759,880,633,856/665,358,399.08 - Step 6: Final answer
x = 528,756,772.84
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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.