Finding the Fourth Proportional to 1,281,356,538.96, 1,768,285,941.68 and 752,742,805.08
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Solution
The fourth proportional to 1,281,356,538.96, 1,768,285,941.68 and 752,742,805.08 is: 1,038,793,247.20
Step by Step Solution
- Step 1: Write the proportion equation
1,281,356,538.96 : 1,768,285,941.68 = 752,742,805.08 : x - Step 2: Convert to fraction form
1,281,356,538.96/1,768,285,941.68 = 752,742,805.08/x - Step 3: Cross multiply
1,281,356,538.96x = 1,768,285,941.68 × 752,742,805.08 - Step 4: Simplify right side
1,281,356,538.96x = 1,331,064,519,923,732,736 - Step 5: Solve for x
x = 1,331,064,519,923,732,736/1,281,356,538.96 - Step 6: Final answer
x = 1,038,793,247.20
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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.