Finding the Fourth Proportional to 402,408,139.60, 603,612,209.40 and 292,718,717.20
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Solution
The fourth proportional to 402,408,139.60, 603,612,209.40 and 292,718,717.20 is: 439,078,075.80
Step by Step Solution
- Step 1: Write the proportion equation
402,408,139.60 : 603,612,209.40 = 292,718,717.20 : x - Step 2: Convert to fraction form
402,408,139.60/603,612,209.40 = 292,718,717.20/x - Step 3: Cross multiply
402,408,139.60x = 603,612,209.40 × 292,718,717.20 - Step 4: Simplify right side
402,408,139.60x = 176,688,591,621,825,760 - Step 5: Solve for x
x = 176,688,591,621,825,760/402,408,139.60 - Step 6: Final answer
x = 439,078,075.80
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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.