Finding the Fourth Proportional to 1,385,537,728.75, 1,912,026,833.35 and 750,442,421.68
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Solution
The fourth proportional to 1,385,537,728.75, 1,912,026,833.35 and 750,442,421.68 is: 1,035,602,291.70
Step by Step Solution
- Step 1: Write the proportion equation
1,385,537,728.75 : 1,912,026,833.35 = 750,442,421.68 : x - Step 2: Convert to fraction form
1,385,537,728.75/1,912,026,833.35 = 750,442,421.68/x - Step 3: Cross multiply
1,385,537,728.75x = 1,912,026,833.35 × 750,442,421.68 - Step 4: Simplify right side
1,385,537,728.75x = 1,434,866,047,136,315,648 - Step 5: Solve for x
x = 1,434,866,047,136,315,648/1,385,537,728.75 - Step 6: Final answer
x = 1,035,602,291.70
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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.