Finding the Fourth Proportional to 1,385,401,726.12, 1,911,853,777.94 and 750,322,247.08
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Solution
The fourth proportional to 1,385,401,726.12, 1,911,853,777.94 and 750,322,247.08 is: 1,035,444,373.79
Step by Step Solution
- Step 1: Write the proportion equation
1,385,401,726.12 : 1,911,853,777.94 = 750,322,247.08 : x - Step 2: Convert to fraction form
1,385,401,726.12/1,911,853,777.94 = 750,322,247.08/x - Step 3: Cross multiply
1,385,401,726.12x = 1,911,853,777.94 × 750,322,247.08 - Step 4: Simplify right side
1,385,401,726.12x = 1,434,506,422,752,328,192 - Step 5: Solve for x
x = 1,434,506,422,752,328,192/1,385,401,726.12 - Step 6: Final answer
x = 1,035,444,373.79
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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.