Finding the Fourth Proportional to 1,668,438,499.20, 2,502,657,748.80 and 970,125,025.20
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Solution
The fourth proportional to 1,668,438,499.20, 2,502,657,748.80 and 970,125,025.20 is: 1,455,187,537.80
Step by Step Solution
- Step 1: Write the proportion equation
1,668,438,499.20 : 2,502,657,748.80 = 970,125,025.20 : x - Step 2: Convert to fraction form
1,668,438,499.20/2,502,657,748.80 = 970,125,025.20/x - Step 3: Cross multiply
1,668,438,499.20x = 2,502,657,748.80 × 970,125,025.20 - Step 4: Simplify right side
1,668,438,499.20x = 2,427,890,911,621,575,680 - Step 5: Solve for x
x = 2,427,890,911,621,575,680/1,668,438,499.20 - Step 6: Final answer
x = 1,455,187,537.80
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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.