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Finding the Fourth Proportional to 404,568.80, 605,470.80 and 354,802.40

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Solution

The fourth proportional to 404,568.80, 605,470.80 and 354,802.40 is: 530,991.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,568.80 : 605,470.80 = 354,802.40 : x
  2. Step 2: Convert to fraction form
    404,568.80/605,470.80 = 354,802.40/x
  3. Step 3: Cross multiply
    404,568.80x = 605,470.80 × 354,802.40
  4. Step 4: Simplify right side
    404,568.80x = 214,822,492,969.92
  5. Step 5: Solve for x
    x = 214,822,492,969.92/404,568.80
  6. Step 6: Final answer
    x = 530,991.25

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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.