Finding the Fourth Proportional to 1,125,630,465.62, 1,553,370,189.95 and 623,871,643.25
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Solution
The fourth proportional to 1,125,630,465.62, 1,553,370,189.95 and 623,871,643.25 is: 860,942,949.39
Step by Step Solution
- Step 1: Write the proportion equation
1,125,630,465.62 : 1,553,370,189.95 = 623,871,643.25 : x - Step 2: Convert to fraction form
1,125,630,465.62/1,553,370,189.95 = 623,871,643.25/x - Step 3: Cross multiply
1,125,630,465.62x = 1,553,370,189.95 × 623,871,643.25 - Step 4: Simplify right side
1,125,630,465.62x = 969,103,612,985,114,368 - Step 5: Solve for x
x = 969,103,612,985,114,368/1,125,630,465.62 - Step 6: Final answer
x = 860,942,949.39
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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.