Finding the Fourth Proportional to 868,994,990.80, 1,303,492,486.20 and 772,249,109.20
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Solution
The fourth proportional to 868,994,990.80, 1,303,492,486.20 and 772,249,109.20 is: 1,158,373,663.80
Step by Step Solution
- Step 1: Write the proportion equation
868,994,990.80 : 1,303,492,486.20 = 772,249,109.20 : x - Step 2: Convert to fraction form
868,994,990.80/1,303,492,486.20 = 772,249,109.20/x - Step 3: Cross multiply
868,994,990.80x = 1,303,492,486.20 × 772,249,109.20 - Step 4: Simplify right side
868,994,990.80x = 1,006,620,911,316,843,392 - Step 5: Solve for x
x = 1,006,620,911,316,843,392/868,994,990.80 - Step 6: Final answer
x = 1,158,373,663.80
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1.5x scale
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.