Finding the Fourth Proportional to 1,078,558,315, 1,489,438,399.62 and 1,019,798,630.44
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Solution
The fourth proportional to 1,078,558,315, 1,489,438,399.62 and 1,019,798,630.44 is: 1,408,294,033.74
Step by Step Solution
- Step 1: Write the proportion equation
1,078,558,315 : 1,489,438,399.62 = 1,019,798,630.44 : x - Step 2: Convert to fraction form
1,078,558,315/1,489,438,399.62 = 1,019,798,630.44/x - Step 3: Cross multiply
1,078,558,315x = 1,489,438,399.62 × 1,019,798,630.44 - Step 4: Simplify right side
1,078,558,315x = 1,518,927,240,057,221,376 - Step 5: Solve for x
x = 1,518,927,240,057,221,376/1,078,558,315 - Step 6: Final answer
x = 1,408,294,033.74
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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.