Finding the Fourth Proportional to 1,125,780,453.20, 1,688,882,815.56 and 426,482,041.88
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Solution
The fourth proportional to 1,125,780,453.20, 1,688,882,815.56 and 426,482,041.88 is: 639,803,426.70
Step by Step Solution
- Step 1: Write the proportion equation
1,125,780,453.20 : 1,688,882,815.56 = 426,482,041.88 : x - Step 2: Convert to fraction form
1,125,780,453.20/1,688,882,815.56 = 426,482,041.88/x - Step 3: Cross multiply
1,125,780,453.20x = 1,688,882,815.56 × 426,482,041.88 - Step 4: Simplify right side
1,125,780,453.20x = 720,278,191,667,627,776 - Step 5: Solve for x
x = 720,278,191,667,627,776/1,125,780,453.20 - Step 6: Final answer
x = 639,803,426.70
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.