Finding the Fourth Proportional to 389,943,972.45, 538,180,437.78 and 246,903,030.99
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Solution
The fourth proportional to 389,943,972.45, 538,180,437.78 and 246,903,030.99 is: 340,762,752.33
Step by Step Solution
- Step 1: Write the proportion equation
389,943,972.45 : 538,180,437.78 = 246,903,030.99 : x - Step 2: Convert to fraction form
389,943,972.45/538,180,437.78 = 246,903,030.99/x - Step 3: Cross multiply
389,943,972.45x = 538,180,437.78 × 246,903,030.99 - Step 4: Simplify right side
389,943,972.45x = 132,878,381,307,407,104 - Step 5: Solve for x
x = 132,878,381,307,407,104/389,943,972.45 - Step 6: Final answer
x = 340,762,752.33
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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.