Finding the Fourth Proportional to 961,803,558.87, 1,327,176,936.61 and 538,440,402.84
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Solution
The fourth proportional to 961,803,558.87, 1,327,176,936.61 and 538,440,402.84 is: 742,985,069.87
Step by Step Solution
- Step 1: Write the proportion equation
961,803,558.87 : 1,327,176,936.61 = 538,440,402.84 : x - Step 2: Convert to fraction form
961,803,558.87/1,327,176,936.61 = 538,440,402.84/x - Step 3: Cross multiply
961,803,558.87x = 1,327,176,936.61 × 538,440,402.84 - Step 4: Simplify right side
961,803,558.87x = 714,605,684,388,245,504 - Step 5: Solve for x
x = 714,605,684,388,245,504/961,803,558.87 - Step 6: Final answer
x = 742,985,069.87
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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.