Home / 679,506.20-1,019,915.40-413,785.70

Finding the Fourth Proportional to 679,506.20, 1,019,915.40 and 413,785.70

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Solution

The fourth proportional to 679,506.20, 1,019,915.40 and 413,785.70 is: 621,078.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,506.20 : 1,019,915.40 = 413,785.70 : x
  2. Step 2: Convert to fraction form
    679,506.20/1,019,915.40 = 413,785.70/x
  3. Step 3: Cross multiply
    679,506.20x = 1,019,915.40 × 413,785.70
  4. Step 4: Simplify right side
    679,506.20x = 422,026,407,729.78
  5. Step 5: Solve for x
    x = 422,026,407,729.78/679,506.20
  6. Step 6: Final answer
    x = 621,078.08

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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.