Finding the Fourth Proportional to 1,018,707,974.36, 1,405,822,905.74 and 572,667,432.60
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Solution
The fourth proportional to 1,018,707,974.36, 1,405,822,905.74 and 572,667,432.60 is: 790,284,374.32
Step by Step Solution
- Step 1: Write the proportion equation
1,018,707,974.36 : 1,405,822,905.74 = 572,667,432.60 : x - Step 2: Convert to fraction form
1,018,707,974.36/1,405,822,905.74 = 572,667,432.60/x - Step 3: Cross multiply
1,018,707,974.36x = 1,405,822,905.74 × 572,667,432.60 - Step 4: Simplify right side
1,018,707,974.36x = 805,068,994,127,101,184 - Step 5: Solve for x
x = 805,068,994,127,101,184/1,018,707,974.36 - Step 6: Final answer
x = 790,284,374.32
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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.