Finding the Fourth Proportional to 1,687,879,432.08, 2,329,242,786.99 and 935,189,862.66
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Solution
The fourth proportional to 1,687,879,432.08, 2,329,242,786.99 and 935,189,862.66 is: 1,290,544,929.14
Step by Step Solution
- Step 1: Write the proportion equation
1,687,879,432.08 : 2,329,242,786.99 = 935,189,862.66 : x - Step 2: Convert to fraction form
1,687,879,432.08/2,329,242,786.99 = 935,189,862.66/x - Step 3: Cross multiply
1,687,879,432.08x = 2,329,242,786.99 × 935,189,862.66 - Step 4: Simplify right side
1,687,879,432.08x = 2,178,284,242,066,973,440 - Step 5: Solve for x
x = 2,178,284,242,066,973,440/1,687,879,432.08 - Step 6: Final answer
x = 1,290,544,929.14
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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.