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Finding the Fourth Proportional to 719,722.80, 1,079,065.80 and 404,276.40

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Solution

The fourth proportional to 719,722.80, 1,079,065.80 and 404,276.40 is: 606,123.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,722.80 : 1,079,065.80 = 404,276.40 : x
  2. Step 2: Convert to fraction form
    719,722.80/1,079,065.80 = 404,276.40/x
  3. Step 3: Cross multiply
    719,722.80x = 1,079,065.80 × 404,276.40
  4. Step 4: Simplify right side
    719,722.80x = 436,240,836,987.12
  5. Step 5: Solve for x
    x = 436,240,836,987.12/719,722.80
  6. Step 6: Final answer
    x = 606,123.41

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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.