Finding the Fourth Proportional to 745,830.78, 1,119,721.81 and 442,778.19
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Solution
The fourth proportional to 745,830.78, 1,119,721.81 and 442,778.19 is: 664,746.49
Step by Step Solution
- Step 1: Write the proportion equation
745,830.78 : 1,119,721.81 = 442,778.19 : x - Step 2: Convert to fraction form
745,830.78/1,119,721.81 = 442,778.19/x - Step 3: Cross multiply
745,830.78x = 1,119,721.81 × 442,778.19 - Step 4: Simplify right side
745,830.78x = 495,788,396,335.32 - Step 5: Solve for x
x = 495,788,396,335.32/745,830.78 - Step 6: Final answer
x = 664,746.49
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.