Finding the Fourth Proportional to 999,358,376.44, 1,379,157,657.06 and 553,321,748.20
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Solution
The fourth proportional to 999,358,376.44, 1,379,157,657.06 and 553,321,748.20 is: 763,607,874.65
Step by Step Solution
- Step 1: Write the proportion equation
999,358,376.44 : 1,379,157,657.06 = 553,321,748.20 : x - Step 2: Convert to fraction form
999,358,376.44/1,379,157,657.06 = 553,321,748.20/x - Step 3: Cross multiply
999,358,376.44x = 1,379,157,657.06 × 553,321,748.20 - Step 4: Simplify right side
999,358,376.44x = 763,117,925,847,855,360 - Step 5: Solve for x
x = 763,117,925,847,855,360/999,358,376.44 - Step 6: Final answer
x = 763,607,874.65
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1.5x scale
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.