Finding the Fourth Proportional to 1,259,720,985.20, 1,889,581,477.80 and 532,709,697.20
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Solution
The fourth proportional to 1,259,720,985.20, 1,889,581,477.80 and 532,709,697.20 is: 799,064,545.80
Step by Step Solution
- Step 1: Write the proportion equation
1,259,720,985.20 : 1,889,581,477.80 = 532,709,697.20 : x - Step 2: Convert to fraction form
1,259,720,985.20/1,889,581,477.80 = 532,709,697.20/x - Step 3: Cross multiply
1,259,720,985.20x = 1,889,581,477.80 × 532,709,697.20 - Step 4: Simplify right side
1,259,720,985.20x = 1,006,598,376,873,566,464 - Step 5: Solve for x
x = 1,006,598,376,873,566,464/1,259,720,985.20 - Step 6: Final answer
x = 799,064,545.80
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1.5x scale
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.