Finding the Fourth Proportional to 813,564,047.20, 1,220,346,070.80 and 268,276,712.80
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Solution
The fourth proportional to 813,564,047.20, 1,220,346,070.80 and 268,276,712.80 is: 402,415,069.20
Step by Step Solution
- Step 1: Write the proportion equation
813,564,047.20 : 1,220,346,070.80 = 268,276,712.80 : x - Step 2: Convert to fraction form
813,564,047.20/1,220,346,070.80 = 268,276,712.80/x - Step 3: Cross multiply
813,564,047.20x = 1,220,346,070.80 × 268,276,712.80 - Step 4: Simplify right side
813,564,047.20x = 327,390,432,352,620,096 - Step 5: Solve for x
x = 327,390,432,352,620,096/813,564,047.20 - Step 6: Final answer
x = 402,415,069.20
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.