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Finding the Fourth Proportional to 520,902.60, 779,280.30 and 451,552.20

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Solution

The fourth proportional to 520,902.60, 779,280.30 and 451,552.20 is: 675,530.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,902.60 : 779,280.30 = 451,552.20 : x
  2. Step 2: Convert to fraction form
    520,902.60/779,280.30 = 451,552.20/x
  3. Step 3: Cross multiply
    520,902.60x = 779,280.30 × 451,552.20
  4. Step 4: Simplify right side
    520,902.60x = 351,885,733,881.66
  5. Step 5: Solve for x
    x = 351,885,733,881.66/520,902.60
  6. Step 6: Final answer
    x = 675,530.77

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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.