Finding the Fourth Proportional to 1,309,174,615.68, 1,806,699,235.94 and 714,497,266.10
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Solution
The fourth proportional to 1,309,174,615.68, 1,806,699,235.94 and 714,497,266.10 is: 986,027,111.50
Step by Step Solution
- Step 1: Write the proportion equation
1,309,174,615.68 : 1,806,699,235.94 = 714,497,266.10 : x - Step 2: Convert to fraction form
1,309,174,615.68/1,806,699,235.94 = 714,497,266.10/x - Step 3: Cross multiply
1,309,174,615.68x = 1,806,699,235.94 × 714,497,266.10 - Step 4: Simplify right side
1,309,174,615.68x = 1,290,881,664,744,088,832 - Step 5: Solve for x
x = 1,290,881,664,744,088,832/1,309,174,615.68 - Step 6: Final answer
x = 986,027,111.50
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.