Finding the Fourth Proportional to 663,281.70, 915,320.94 and 391,350.12
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Solution
The fourth proportional to 663,281.70, 915,320.94 and 391,350.12 is: 540,058.56
Step by Step Solution
- Step 1: Write the proportion equation
663,281.70 : 915,320.94 = 391,350.12 : x - Step 2: Convert to fraction form
663,281.70/915,320.94 = 391,350.12/x - Step 3: Cross multiply
663,281.70x = 915,320.94 × 391,350.12 - Step 4: Simplify right side
663,281.70x = 358,210,959,707.51 - Step 5: Solve for x
x = 358,210,959,707.51/663,281.70 - Step 6: Final answer
x = 540,058.56
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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.