Finding the Fourth Proportional to 1,120,917,985.65, 1,681,537,438.67 and 344,628,819.99
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Solution
The fourth proportional to 1,120,917,985.65, 1,681,537,438.67 and 344,628,819.99 is: 516,992,563.84
Step by Step Solution
- Step 1: Write the proportion equation
1,120,917,985.65 : 1,681,537,438.67 = 344,628,819.99 : x - Step 2: Convert to fraction form
1,120,917,985.65/1,681,537,438.67 = 344,628,819.99/x - Step 3: Cross multiply
1,120,917,985.65x = 1,681,537,438.67 × 344,628,819.99 - Step 4: Simplify right side
1,120,917,985.65x = 579,506,263,256,125,952 - Step 5: Solve for x
x = 579,506,263,256,125,952/1,120,917,985.65 - Step 6: Final answer
x = 516,992,563.84
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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.