Home / 566,411.43-781,669.94-311,786.31

Finding the Fourth Proportional to 566,411.43, 781,669.94 and 311,786.31

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Solution

The fourth proportional to 566,411.43, 781,669.94 and 311,786.31 is: 430,277.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    566,411.43 : 781,669.94 = 311,786.31 : x
  2. Step 2: Convert to fraction form
    566,411.43/781,669.94 = 311,786.31/x
  3. Step 3: Cross multiply
    566,411.43x = 781,669.94 × 311,786.31
  4. Step 4: Simplify right side
    566,411.43x = 243,713,984,671.59
  5. Step 5: Solve for x
    x = 243,713,984,671.59/566,411.43
  6. Step 6: Final answer
    x = 430,277.31

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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.