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Finding the Fourth Proportional to 480,348.36, 662,786.55 and 289,372.23

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Solution

The fourth proportional to 480,348.36, 662,786.55 and 289,372.23 is: 399,276.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    480,348.36 : 662,786.55 = 289,372.23 : x
  2. Step 2: Convert to fraction form
    480,348.36/662,786.55 = 289,372.23/x
  3. Step 3: Cross multiply
    480,348.36x = 662,786.55 × 289,372.23
  4. Step 4: Simplify right side
    480,348.36x = 191,792,021,987.51
  5. Step 5: Solve for x
    x = 191,792,021,987.51/480,348.36
  6. Step 6: Final answer
    x = 399,276.94

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1.5x scale

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.