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Finding the Fourth Proportional to 413,389.48, 570,650.82 and 279,434.92

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Solution

The fourth proportional to 413,389.48, 570,650.82 and 279,434.92 is: 385,737.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    413,389.48 : 570,650.82 = 279,434.92 : x
  2. Step 2: Convert to fraction form
    413,389.48/570,650.82 = 279,434.92/x
  3. Step 3: Cross multiply
    413,389.48x = 570,650.82 × 279,434.92
  4. Step 4: Simplify right side
    413,389.48x = 159,459,766,234.63
  5. Step 5: Solve for x
    x = 159,459,766,234.63/413,389.48
  6. Step 6: Final answer
    x = 385,737.36

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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.