Home / 690,900.88-1,035,649.22-286,313.21

Finding the Fourth Proportional to 690,900.88, 1,035,649.22 and 286,313.21

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Solution

The fourth proportional to 690,900.88, 1,035,649.22 and 286,313.21 is: 429,178.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,900.88 : 1,035,649.22 = 286,313.21 : x
  2. Step 2: Convert to fraction form
    690,900.88/1,035,649.22 = 286,313.21/x
  3. Step 3: Cross multiply
    690,900.88x = 1,035,649.22 × 286,313.21
  4. Step 4: Simplify right side
    690,900.88x = 296,520,052,612.20
  5. Step 5: Solve for x
    x = 296,520,052,612.20/690,900.88
  6. Step 6: Final answer
    x = 429,178.86

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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.