Finding the Fourth Proportional to 1,211,697,860.70, 1,817,546,725.56 and 291,574,297.74
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Solution
The fourth proportional to 1,211,697,860.70, 1,817,546,725.56 and 291,574,297.74 is: 437,361,430.85
Step by Step Solution
- Step 1: Write the proportion equation
1,211,697,860.70 : 1,817,546,725.56 = 291,574,297.74 : x - Step 2: Convert to fraction form
1,211,697,860.70/1,817,546,725.56 = 291,574,297.74/x - Step 3: Cross multiply
1,211,697,860.70x = 1,817,546,725.56 × 291,574,297.74 - Step 4: Simplify right side
1,211,697,860.70x = 529,949,910,114,793,536 - Step 5: Solve for x
x = 529,949,910,114,793,536/1,211,697,860.70 - Step 6: Final answer
x = 437,361,430.85
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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.