Home / 690,497.76-1,035,658.80-291,297.12

Finding the Fourth Proportional to 690,497.76, 1,035,658.80 and 291,297.12

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Solution

The fourth proportional to 690,497.76, 1,035,658.80 and 291,297.12 is: 436,908.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,497.76 : 1,035,658.80 = 291,297.12 : x
  2. Step 2: Convert to fraction form
    690,497.76/1,035,658.80 = 291,297.12/x
  3. Step 3: Cross multiply
    690,497.76x = 1,035,658.80 × 291,297.12
  4. Step 4: Simplify right side
    690,497.76x = 301,684,425,742.66
  5. Step 5: Solve for x
    x = 301,684,425,742.66/690,497.76
  6. Step 6: Final answer
    x = 436,908.62

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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.