Home / 566,428.38-781,671.40-311,777.76

Finding the Fourth Proportional to 566,428.38, 781,671.40 and 311,777.76

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Solution

The fourth proportional to 566,428.38, 781,671.40 and 311,777.76 is: 430,253.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    566,428.38 : 781,671.40 = 311,777.76 : x
  2. Step 2: Convert to fraction form
    566,428.38/781,671.40 = 311,777.76/x
  3. Step 3: Cross multiply
    566,428.38x = 781,671.40 × 311,777.76
  4. Step 4: Simplify right side
    566,428.38x = 243,707,758,148.06
  5. Step 5: Solve for x
    x = 243,707,758,148.06/566,428.38
  6. Step 6: Final answer
    x = 430,253.44

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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.