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Finding the Fourth Proportional to 654,828.80, 902,428.80 and 573,728

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Solution

The fourth proportional to 654,828.80, 902,428.80 and 573,728 is: 790,662.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    654,828.80 : 902,428.80 = 573,728 : x
  2. Step 2: Convert to fraction form
    654,828.80/902,428.80 = 573,728/x
  3. Step 3: Cross multiply
    654,828.80x = 902,428.80 × 573,728
  4. Step 4: Simplify right side
    654,828.80x = 517,748,670,566.40
  5. Step 5: Solve for x
    x = 517,748,670,566.40/654,828.80
  6. Step 6: Final answer
    x = 790,662.64

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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.