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Finding the Fourth Proportional to 520,023, 778,780.62 and 253,121.52

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Solution

The fourth proportional to 520,023, 778,780.62 and 253,121.52 is: 379,071.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,023 : 778,780.62 = 253,121.52 : x
  2. Step 2: Convert to fraction form
    520,023/778,780.62 = 253,121.52/x
  3. Step 3: Cross multiply
    520,023x = 778,780.62 × 253,121.52
  4. Step 4: Simplify right side
    520,023x = 197,126,134,280.94
  5. Step 5: Solve for x
    x = 197,126,134,280.94/520,023
  6. Step 6: Final answer
    x = 379,071.95

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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.