Finding the Fourth Proportional to 1,560,218,438.08, 2,153,100,926.38 and 855,355,285.90
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Solution
The fourth proportional to 1,560,218,438.08, 2,153,100,926.38 and 855,355,285.90 is: 1,180,390,010.47
Step by Step Solution
- Step 1: Write the proportion equation
1,560,218,438.08 : 2,153,100,926.38 = 855,355,285.90 : x - Step 2: Convert to fraction form
1,560,218,438.08/2,153,100,926.38 = 855,355,285.90/x - Step 3: Cross multiply
1,560,218,438.08x = 2,153,100,926.38 × 855,355,285.90 - Step 4: Simplify right side
1,560,218,438.08x = 1,841,666,258,455,319,808 - Step 5: Solve for x
x = 1,841,666,258,455,319,808/1,560,218,438.08 - Step 6: Final answer
x = 1,180,390,010.47
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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.