Finding the Fourth Proportional to 943,177.21, 1,421,120.70 and 778,388.58
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Solution
The fourth proportional to 943,177.21, 1,421,120.70 and 778,388.58 is: 1,172,827.45
Step by Step Solution
- Step 1: Write the proportion equation
943,177.21 : 1,421,120.70 = 778,388.58 : x - Step 2: Convert to fraction form
943,177.21/1,421,120.70 = 778,388.58/x - Step 3: Cross multiply
943,177.21x = 1,421,120.70 × 778,388.58 - Step 4: Simplify right side
943,177.21x = 1,106,184,123,681.61 - Step 5: Solve for x
x = 1,106,184,123,681.61/943,177.21 - Step 6: Final answer
x = 1,172,827.45
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Why These Related Problems?
These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.