Finding the Fourth Proportional to 3,130,989,931.49, 4,320,768,885.35 and 1,721,317,878.41
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Solution
The fourth proportional to 3,130,989,931.49, 4,320,768,885.35 and 1,721,317,878.41 is: 2,375,420,200.50
Step by Step Solution
- Step 1: Write the proportion equation
3,130,989,931.49 : 4,320,768,885.35 = 1,721,317,878.41 : x - Step 2: Convert to fraction form
3,130,989,931.49/4,320,768,885.35 = 1,721,317,878.41/x - Step 3: Cross multiply
3,130,989,931.49x = 4,320,768,885.35 × 1,721,317,878.41 - Step 4: Simplify right side
3,130,989,931.49x = 7,437,416,730,800,392,192 - Step 5: Solve for x
x = 7,437,416,730,800,392,192/3,130,989,931.49 - Step 6: Final answer
x = 2,375,420,200.50
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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.