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Finding the Fourth Proportional to 566,280.33, 781,467 and 311,631.51

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Solution

The fourth proportional to 566,280.33, 781,467 and 311,631.51 is: 430,051.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    566,280.33 : 781,467 = 311,631.51 : x
  2. Step 2: Convert to fraction form
    566,280.33/781,467 = 311,631.51/x
  3. Step 3: Cross multiply
    566,280.33x = 781,467 × 311,631.51
  4. Step 4: Simplify right side
    566,280.33x = 243,529,741,225.17
  5. Step 5: Solve for x
    x = 243,529,741,225.17/566,280.33
  6. Step 6: Final answer
    x = 430,051.56

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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.