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Finding the Fourth Proportional to 520,722.53, 718,307.71 and 302,906.70

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Solution

The fourth proportional to 520,722.53, 718,307.71 and 302,906.70 is: 417,842.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,722.53 : 718,307.71 = 302,906.70 : x
  2. Step 2: Convert to fraction form
    520,722.53/718,307.71 = 302,906.70/x
  3. Step 3: Cross multiply
    520,722.53x = 718,307.71 × 302,906.70
  4. Step 4: Simplify right side
    520,722.53x = 217,580,217,263.39
  5. Step 5: Solve for x
    x = 217,580,217,263.39/520,722.53
  6. Step 6: Final answer
    x = 417,842.91

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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.