Home / 687,021.78-1,030,626.40-237,622.16

Finding the Fourth Proportional to 687,021.78, 1,030,626.40 and 237,622.16

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Solution

The fourth proportional to 687,021.78, 1,030,626.40 and 237,622.16 is: 356,465.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,021.78 : 1,030,626.40 = 237,622.16 : x
  2. Step 2: Convert to fraction form
    687,021.78/1,030,626.40 = 237,622.16/x
  3. Step 3: Cross multiply
    687,021.78x = 1,030,626.40 × 237,622.16
  4. Step 4: Simplify right side
    687,021.78x = 244,899,671,321.02
  5. Step 5: Solve for x
    x = 244,899,671,321.02/687,021.78
  6. Step 6: Final answer
    x = 356,465.66

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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.