Finding the Fourth Proportional to 1,268,547,168.12, 1,750,573,612.74 and 711,618,257.76
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Solution
The fourth proportional to 1,268,547,168.12, 1,750,573,612.74 and 711,618,257.76 is: 982,021,146.46
Step by Step Solution
- Step 1: Write the proportion equation
1,268,547,168.12 : 1,750,573,612.74 = 711,618,257.76 : x - Step 2: Convert to fraction form
1,268,547,168.12/1,750,573,612.74 = 711,618,257.76/x - Step 3: Cross multiply
1,268,547,168.12x = 1,750,573,612.74 × 711,618,257.76 - Step 4: Simplify right side
1,268,547,168.12x = 1,245,740,144,378,667,776 - Step 5: Solve for x
x = 1,245,740,144,378,667,776/1,268,547,168.12 - Step 6: Final answer
x = 982,021,146.46
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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.