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Finding the Fourth Proportional to 520,025, 778,783.62 and 253,123.52

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Solution

The fourth proportional to 520,025, 778,783.62 and 253,123.52 is: 379,074.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,025 : 778,783.62 = 253,123.52 : x
  2. Step 2: Convert to fraction form
    520,025/778,783.62 = 253,123.52/x
  3. Step 3: Cross multiply
    520,025x = 778,783.62 × 253,123.52
  4. Step 4: Simplify right side
    520,025x = 197,128,451,212.74
  5. Step 5: Solve for x
    x = 197,128,451,212.74/520,025
  6. Step 6: Final answer
    x = 379,074.95

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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.