Home / 690,911.30-953,432.42-384,971.86

Finding the Fourth Proportional to 690,911.30, 953,432.42 and 384,971.86

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Solution

The fourth proportional to 690,911.30, 953,432.42 and 384,971.86 is: 531,247.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,911.30 : 953,432.42 = 384,971.86 : x
  2. Step 2: Convert to fraction form
    690,911.30/953,432.42 = 384,971.86/x
  3. Step 3: Cross multiply
    690,911.30x = 953,432.42 × 384,971.86
  4. Step 4: Simplify right side
    690,911.30x = 367,044,652,111.70
  5. Step 5: Solve for x
    x = 367,044,652,111.70/690,911.30
  6. Step 6: Final answer
    x = 531,247.14

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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.