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Finding the Fourth Proportional to 520,276.52, 718,072.98 and 302,552.66

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Solution

The fourth proportional to 520,276.52, 718,072.98 and 302,552.66 is: 417,575.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,276.52 : 718,072.98 = 302,552.66 : x
  2. Step 2: Convert to fraction form
    520,276.52/718,072.98 = 302,552.66/x
  3. Step 3: Cross multiply
    520,276.52x = 718,072.98 × 302,552.66
  4. Step 4: Simplify right side
    520,276.52x = 217,254,890,173.13
  5. Step 5: Solve for x
    x = 217,254,890,173.13/520,276.52
  6. Step 6: Final answer
    x = 417,575.81

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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.