Finding the Fourth Proportional to 28,688,771,655.24, 39,590,642,391.63 and 15,828,410,967.21
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Solution
The fourth proportional to 28,688,771,655.24, 39,590,642,391.63 and 15,828,410,967.21 is: 21,843,283,001.49
Step by Step Solution
- Step 1: Write the proportion equation
28,688,771,655.24 : 39,590,642,391.63 = 15,828,410,967.21 : x - Step 2: Convert to fraction form
28,688,771,655.24/39,590,642,391.63 = 15,828,410,967.21/x - Step 3: Cross multiply
28,688,771,655.24x = 39,590,642,391.63 × 15,828,410,967.21 - Step 4: Simplify right side
28,688,771,655.24x = 626,656,958,230,565,355,520 - Step 5: Solve for x
x = 626,656,958,230,565,355,520/28,688,771,655.24 - Step 6: Final answer
x = 21,843,283,001.49
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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.