Finding the Fourth Proportional to 426,011,315.47, 639,409,787.97 and 216,069,345.81
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Solution
The fourth proportional to 426,011,315.47, 639,409,787.97 and 216,069,345.81 is: 324,303,251.05
Step by Step Solution
- Step 1: Write the proportion equation
426,011,315.47 : 639,409,787.97 = 216,069,345.81 : x - Step 2: Convert to fraction form
426,011,315.47/639,409,787.97 = 216,069,345.81/x - Step 3: Cross multiply
426,011,315.47x = 639,409,787.97 × 216,069,345.81 - Step 4: Simplify right side
426,011,315.47x = 138,156,854,591,188,720 - Step 5: Solve for x
x = 138,156,854,591,188,720/426,011,315.47 - Step 6: Final answer
x = 324,303,251.05
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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.