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Finding the Fourth Proportional to 410,139.80, 615,209.70 and 404,610.20

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Solution

The fourth proportional to 410,139.80, 615,209.70 and 404,610.20 is: 606,915.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    410,139.80 : 615,209.70 = 404,610.20 : x
  2. Step 2: Convert to fraction form
    410,139.80/615,209.70 = 404,610.20/x
  3. Step 3: Cross multiply
    410,139.80x = 615,209.70 × 404,610.20
  4. Step 4: Simplify right side
    410,139.80x = 248,920,119,758.94
  5. Step 5: Solve for x
    x = 248,920,119,758.94/410,139.80
  6. Step 6: Final answer
    x = 606,915.30

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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.