Finding the Fourth Proportional to 1,455,828,963.70, 2,183,743,445.55 and 639,535,587.70
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Solution
The fourth proportional to 1,455,828,963.70, 2,183,743,445.55 and 639,535,587.70 is: 959,303,381.55
Step by Step Solution
- Step 1: Write the proportion equation
1,455,828,963.70 : 2,183,743,445.55 = 639,535,587.70 : x - Step 2: Convert to fraction form
1,455,828,963.70/2,183,743,445.55 = 639,535,587.70/x - Step 3: Cross multiply
1,455,828,963.70x = 2,183,743,445.55 × 639,535,587.70 - Step 4: Simplify right side
1,455,828,963.70x = 1,396,581,647,835,842,304 - Step 5: Solve for x
x = 1,396,581,647,835,842,304/1,455,828,963.70 - Step 6: Final answer
x = 959,303,381.55
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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.