Finding the Fourth Proportional to 813,060,951.97, 1,121,924,916.93 and 455,746,263.47
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Solution
The fourth proportional to 813,060,951.97, 1,121,924,916.93 and 455,746,263.47 is: 628,874,240.66
Step by Step Solution
- Step 1: Write the proportion equation
813,060,951.97 : 1,121,924,916.93 = 455,746,263.47 : x - Step 2: Convert to fraction form
813,060,951.97/1,121,924,916.93 = 455,746,263.47/x - Step 3: Cross multiply
813,060,951.97x = 1,121,924,916.93 × 455,746,263.47 - Step 4: Simplify right side
813,060,951.97x = 511,313,088,779,633,728 - Step 5: Solve for x
x = 511,313,088,779,633,728/813,060,951.97 - Step 6: Final answer
x = 628,874,240.66
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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.