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Finding the Fourth Proportional to 518,726.76, 716,021.52 and 303,936.36

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Solution

The fourth proportional to 518,726.76, 716,021.52 and 303,936.36 is: 419,536.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,726.76 : 716,021.52 = 303,936.36 : x
  2. Step 2: Convert to fraction form
    518,726.76/716,021.52 = 303,936.36/x
  3. Step 3: Cross multiply
    518,726.76x = 716,021.52 × 303,936.36
  4. Step 4: Simplify right side
    518,726.76x = 217,624,974,470.47
  5. Step 5: Solve for x
    x = 217,624,974,470.47/518,726.76
  6. Step 6: Final answer
    x = 419,536.82

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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.