Finding the Fourth Proportional to 1,221,779,349.34, 1,686,899,036.73 and 1,143,721,295.26
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Solution
The fourth proportional to 1,221,779,349.34, 1,686,899,036.73 and 1,143,721,295.26 is: 1,579,125,029.66
Step by Step Solution
- Step 1: Write the proportion equation
1,221,779,349.34 : 1,686,899,036.73 = 1,143,721,295.26 : x - Step 2: Convert to fraction form
1,221,779,349.34/1,686,899,036.73 = 1,143,721,295.26/x - Step 3: Cross multiply
1,221,779,349.34x = 1,686,899,036.73 × 1,143,721,295.26 - Step 4: Simplify right side
1,221,779,349.34x = 1,929,342,351,261,696,256 - Step 5: Solve for x
x = 1,929,342,351,261,696,256/1,221,779,349.34 - Step 6: Final answer
x = 1,579,125,029.66
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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.