Home / 689,072.60-1,031,640.60-618,213.80

Finding the Fourth Proportional to 689,072.60, 1,031,640.60 and 618,213.80

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Solution

The fourth proportional to 689,072.60, 1,031,640.60 and 618,213.80 is: 925,554.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,072.60 : 1,031,640.60 = 618,213.80 : x
  2. Step 2: Convert to fraction form
    689,072.60/1,031,640.60 = 618,213.80/x
  3. Step 3: Cross multiply
    689,072.60x = 1,031,640.60 × 618,213.80
  4. Step 4: Simplify right side
    689,072.60x = 637,774,455,560.28
  5. Step 5: Solve for x
    x = 637,774,455,560.28/689,072.60
  6. Step 6: Final answer
    x = 925,554.80

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1.5x scale

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.