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Finding the Fourth Proportional to 520,648.33, 780,893.59 and 179,143.69

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Solution

The fourth proportional to 520,648.33, 780,893.59 and 179,143.69 is: 268,688.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,648.33 : 780,893.59 = 179,143.69 : x
  2. Step 2: Convert to fraction form
    520,648.33/780,893.59 = 179,143.69/x
  3. Step 3: Cross multiply
    520,648.33x = 780,893.59 × 179,143.69
  4. Step 4: Simplify right side
    520,648.33x = 139,892,159,209.95
  5. Step 5: Solve for x
    x = 139,892,159,209.95/520,648.33
  6. Step 6: Final answer
    x = 268,688.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.