Finding the Fourth Proportional to 472,905.20, 709,357.80 and 465,129.20
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Solution
The fourth proportional to 472,905.20, 709,357.80 and 465,129.20 is: 697,693.80
Step by Step Solution
- Step 1: Write the proportion equation
472,905.20 : 709,357.80 = 465,129.20 : x - Step 2: Convert to fraction form
472,905.20/709,357.80 = 465,129.20/x - Step 3: Cross multiply
472,905.20x = 709,357.80 × 465,129.20 - Step 4: Simplify right side
472,905.20x = 329,943,026,027.76 - Step 5: Solve for x
x = 329,943,026,027.76/472,905.20 - Step 6: Final answer
x = 697,693.80
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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.