Finding the Fourth Proportional to 1,992,038,432.20, 2,988,505,545.90 and 611,916,627.40
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Solution
The fourth proportional to 1,992,038,432.20, 2,988,505,545.90 and 611,916,627.40 is: 918,012,526.79
Step by Step Solution
- Step 1: Write the proportion equation
1,992,038,432.20 : 2,988,505,545.90 = 611,916,627.40 : x - Step 2: Convert to fraction form
1,992,038,432.20/2,988,505,545.90 = 611,916,627.40/x - Step 3: Cross multiply
1,992,038,432.20x = 2,988,505,545.90 × 611,916,627.40 - Step 4: Simplify right side
1,992,038,432.20x = 1,828,716,234,613,323,776 - Step 5: Solve for x
x = 1,828,716,234,613,323,776/1,992,038,432.20 - Step 6: Final answer
x = 918,012,526.79
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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.