Home / 690,686.58-1,036,170.51-291,328.86

Finding the Fourth Proportional to 690,686.58, 1,036,170.51 and 291,328.86

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Solution

The fourth proportional to 690,686.58, 1,036,170.51 and 291,328.86 is: 437,052.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,686.58 : 1,036,170.51 = 291,328.86 : x
  2. Step 2: Convert to fraction form
    690,686.58/1,036,170.51 = 291,328.86/x
  3. Step 3: Cross multiply
    690,686.58x = 1,036,170.51 × 291,328.86
  4. Step 4: Simplify right side
    690,686.58x = 301,866,373,443.92
  5. Step 5: Solve for x
    x = 301,866,373,443.92/690,686.58
  6. Step 6: Final answer
    x = 437,052.61

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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.