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Finding the Fourth Proportional to 520,705.34, 718,284.19 and 302,889.48

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Solution

The fourth proportional to 520,705.34, 718,284.19 and 302,889.48 is: 417,819.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,705.34 : 718,284.19 = 302,889.48 : x
  2. Step 2: Convert to fraction form
    520,705.34/718,284.19 = 302,889.48/x
  3. Step 3: Cross multiply
    520,705.34x = 718,284.19 × 302,889.48
  4. Step 4: Simplify right side
    520,705.34x = 217,560,724,801.32
  5. Step 5: Solve for x
    x = 217,560,724,801.32/520,705.34
  6. Step 6: Final answer
    x = 417,819.27

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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.