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Finding the Fourth Proportional to 570,407.54, 787,108.97 and 340,919.24

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Solution

The fourth proportional to 570,407.54, 787,108.97 and 340,919.24 is: 470,436.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,407.54 : 787,108.97 = 340,919.24 : x
  2. Step 2: Convert to fraction form
    570,407.54/787,108.97 = 340,919.24/x
  3. Step 3: Cross multiply
    570,407.54x = 787,108.97 × 340,919.24
  4. Step 4: Simplify right side
    570,407.54x = 268,340,586,209.44
  5. Step 5: Solve for x
    x = 268,340,586,209.44/570,407.54
  6. Step 6: Final answer
    x = 470,436.61

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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.