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Finding the Fourth Proportional to 520,281.81, 717,973.83 and 290,839.50

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Solution

The fourth proportional to 520,281.81, 717,973.83 and 290,839.50 is: 401,350.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,281.81 : 717,973.83 = 290,839.50 : x
  2. Step 2: Convert to fraction form
    520,281.81/717,973.83 = 290,839.50/x
  3. Step 3: Cross multiply
    520,281.81x = 717,973.83 × 290,839.50
  4. Step 4: Simplify right side
    520,281.81x = 208,815,149,730.29
  5. Step 5: Solve for x
    x = 208,815,149,730.29/520,281.81
  6. Step 6: Final answer
    x = 401,350.09

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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.