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Finding the Fourth Proportional to 512,353.60, 707,018.64 and 286,013.44

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Solution

The fourth proportional to 512,353.60, 707,018.64 and 286,013.44 is: 394,682.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    512,353.60 : 707,018.64 = 286,013.44 : x
  2. Step 2: Convert to fraction form
    512,353.60/707,018.64 = 286,013.44/x
  3. Step 3: Cross multiply
    512,353.60x = 707,018.64 × 286,013.44
  4. Step 4: Simplify right side
    512,353.60x = 202,216,833,370.52
  5. Step 5: Solve for x
    x = 202,216,833,370.52/512,353.60
  6. Step 6: Final answer
    x = 394,682.18

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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.